1. The store has four baskets of apples, each of which is 55kg. We have sold 135kg. How many kilograms of apples are left?
2. There are 24 people in the art group, and the number of people in the sports group is four times that of the art group. How many people are there in the two groups?
3.4 points for each box of chalk 1 yuan, and 6.2 points for each bottle of ink. The school bought 6 boxes of chalk and 5 bottles of ink. How much will it cost?
There are nine basketballs, and the number of football is eight times that of basketball. How many footballs are there?
There are 72 footballs and 9 basketballs. How many times are there more football than basketball?
6. There are 72 football, which is exactly eight times the number of basketball. How many basketballs are there?
7. The school bought 6 boxes of books, each with 50 books, which were distributed to 4 grades on average. How many books are distributed in each grade?
8. Plant a tree every 5 meters on the side of a 3-kilometer highway. How many sections should a tree be divided into?
Xiao Ming has to walk 200 meters from home to school. If he walks back and forth twice, how many meters will he walk?
10. There are 19 yellow balloons in the store. There are seven yellow balloons missing from Le Ballon Rouge, and the number of flower balloons is twice that of Le Ballon Rouge. How many?
1 1. Students do exercises, Xiaohua does 75, Xiaoming does 85, Xiaoqing does 30, which is less than the total of Xiaoming in Obana. How much did Xiaoqing do?
12. There are 14 poplars in the school. There are twice as many poplars as pine trees, and there are four more willows than pine trees. How many willows are there?
13. There are 46 students in Grade Three (1), among whom 2 1 are girls. How many more boys than girls?
14. There are 7 big monkeys in the park, and the number of small monkeys is only 9 more than that of big monkeys. How many monkeys are there in the park?
15.A has 140 yuan, which is twice that of B. How many are A and B respectively?
16. A train departs from A to B at 5: 00 a.m. and arrives at B at 3: 00 p.m. as planned, but the actual arrival time is 5: 00 p.m. sharp, two hours late. How many kilometers does the train actually travel per hour? ( 15-5)* 120= 1200 1200/( 10+2)= 100
17. The A train departs from A to B at 8: 00 a.m., travels at 60 kilometers per hour as planned, and arrives at B at 4: 00 p.m. ... but it is actually two hours late. How many kilometers does this car actually travel per hour? ( 16-8)*60=480 480/(8+2)=48
18. Xiao Ning, Xiaohong and Jony J went to buy pencils, Xiao Ning bought seven, Xiaohong bought five, and Jony J didn't. After returning home, the three men divided the pencils equally, and Xiao Jia took out 80 cents. How much should Xiao Jia give Ning? How much is Xiaohong? (7+5)/3=4 8/4=2 2*(7-4)=6 8-6=2
19. Three good friends went to buy drinks. Liang Xiao bought five bottles, Xiaohua bought four bottles, but Yang Yang didn't. When they got home, the three people drank a little wine on average. Yang Yang took out 6 yuan's money. How much should he give Xiao Liang? How much does it cost? (5+4)/3=3 6/3=2 2*(5-3)=4 6-4=2
20. Pour milk into an empty bottle with a cup. If you pour 2 cups of milk, the bottle will weigh 450 grams. If you pour 5 cups of milk, the bottle will weigh 750 grams. How many grams does a glass of milk and an empty bottle weigh? (750-450)/3= 100 450-(2* 100)=250
2 1.( 1) The two factors are 7 and 12 respectively. What is the product?
(2) What is three times 250?
22. A tiger weighs 180kg, and a bear weighs twice as much as a tiger. How much does this bear weigh?
23. The fruit shop sent 20 boxes of pears, each weighing 25 kilograms. Sold 325 kilograms, how many kilograms are left?
24. Miss Wang bought volleyball with 40 yuan, and spent three times as much money on basketball as volleyball. How much did Mr. Wang spend on a ball?
25. There are 36 students in Class One of the School Art Troupe, among whom 27 are girls. How many times the number of girls is that of boys?
26. Students collect the seeds of trees. Collected15kg. How many kilograms are collected, and the total weight of tree species is exactly three times that of the original?
27. A number multiplied by 10 is 72 more than the original number. What was the original number?
28. The price of bicycles is 182 yuan, and the price of motorcycles is 10 times that of bicycles, 700 yuan. What is the price of a motorcycle? How much is a motorcycle more expensive than a bicycle?
29.( 1) What is the product of the least two digits?
(2) What is the product of the largest two digits and the smallest two digits?
30. In a volleyball championship, 32 teams participated, and each team had 12 players. How many athletes are there?
3 1. The toy production team used to make 40 toys every day, but now the daily output is 0/0 times of the original/kloc-0. How many more pieces do you make every day than before?
32. The product of three digits multiplied by 6 is equal to the product of 4 1 multiplied by 18. What is this three-digit number?
There are11students in Class One, Grade Three. There are 35 students in Class One, and there are equal students in Class Two and Class Three. How many people are there in Class Two and Class Three?
34.( 1) What is the product of the largest two digits?
(2) How many digits may the product of two digits multiplied by two digits be?
35. The school bought 25 sets of big sportswear and 45 sets of small sportswear. Large 57 yuan, small 52 yuan. (1) How much are two kinds of sportswear? (2) How much should a * * * pay?
36. The school bought some homework and distributed it to 15 classes, with 164 copies in each class, leaving 420 copies. How many exercise books did the school buy?
37. The following questions don't need to be written vertically. Can you work them out with your mouth?
1 1×22 12×33 14×55 15×66
38. Xiaohu raised 18 hens and laid 450 eggs in May, 36 more than in April. How many eggs have been laid in these two months?
39. These two factors are 63 and 4 respectively. What is the product? When the factor 4 is amplified by 10 times and 100 times, what are the products respectively?
40. A factory uses three cars to transport coal, and one * * * transports 9750 Jin of coal. How many kilograms does each car transport on average?
4 1. limin fruit shop delivers 500 kg peaches and sells 13 baskets, with an average of 25 kg per basket. How many kilograms of peaches are left?
42. There are 1440 people studying in RTVU in a county. Prepare a TV set for every 8 people. 95 sets have been prepared. How many sets are still missing?
43. The school bought four footballs to go to 220 yuan. A basketball is more expensive than a football, 8 yuan. How much does it cost to buy four basketballs?
44. A grain processing factory ground a batch of rice. 96 bags have been packed, each bag is 75 kilograms, and the remaining 2700 kilograms are not packed. This batch of rice is shipped out in two batches on average. How many kilograms are shipped out in one batch?
45. Daxing Forest Farm planted 386 pine trees last year, planting three times as many poplars as pine trees. How many poplars have been planted?
46. There are 290 red goldfish in the fish pond in the park, about four times as many as the red goldfish. How many goldfish have been stocked?
47. The amount of rice sold by a grain store in three days is 430 kg, 380 kg and 407 kg respectively. How many Jin of rice does this grain store sell in three days?
48. Tell the quantitative relationship of the following questions before you answer them.
(1) Xiao Qiang can run 4500m per hour. How many meters can he run in two hours?
(2) Hexi paper mill should bind a batch of diaries. Bind 340 books every day, 16 days to complete the binding. How many copies are there in this batch of diaries?
49. Decide whether the following questions are true or false.
(1) Know the price of each bag of washing powder and the number of bags bought, find the total price, and multiply the unit price of washing powder by the number of bags.
(2) "The distance from Xiaoming's home to the cinema is 250 meters, and Xiaoming walked from home to the cinema for 5 minutes. How many meters does Xiaoming walk every minute? " It's a topic of distance.
(3) "There are three peach trees in the school. On average, a peach tree can bear 85 kilograms of peaches. How many kilograms did the school receive? " It is the topic of seeking the total amount of works.
(4) Knowing the distance and time of walking every hour, you can find the distance of * * *.
50. Fill in the missing known conditions of each question before answering.
(1), after 7 days, how many pieces did a * * * make?
(2) How much is each chair 12 yuan * *?
(3) There are 20 blankets in each big bag. How many blankets does a * * * carry?
(4) 15 minutes How long does it take for Mr. Li to go to the county by bike?
5 1. If you know the speed of a motorcycle and the time it travels, how do you calculate the distance it needs to travel? (Select the specific quantity, and then solve. )
52. If we know the number of baskets of oranges delivered by the fruit shop, the kilograms of oranges in each basket and the kilograms of goods in backlog. How many kilograms of oranges do the fruit shop need to keep? How to calculate? (Select the specific quantity, and then solve. )
53. A fruit shop shipped 150kg apples, and put 6 baskets on average, with 2 yuan per catty of apples. How much is a basket of apples?
54. Zhang Hua goes to the Children's Palace by bike from school. It is known that he rides a bike for 8 minutes at 2 10 meters per minute, and there is still 140 meters from the Children's Palace. How far is it from the school to the Children's Palace?
55. The number of meters of blue cloth sold in shops is four times that of printed cloth. Sell 93 meters printed cloth, how many meters of blue cloth?
56. Last year, 940 fry were raised in the pond of Lianhua Village. The number of fry released this year is three times that of last year. How much more has been done this year than last year?
57. Judge the right or wrong of the following questions and correct the mistakes.
(1) "A junior volleyball in 42 yuan, the school bought five volleyballs. * * * How much is it? " This is an application problem of total output. ( )
(2) Knowing how many products a worker produces every day and how many days the worker works, you can know how many products the worker produces these days. ( )
(3) Require the total amount of work, and you must know the working time and distance. ( )
(4) "Xiaohong walks 3000 meters per hour, and Miss Li walks 5000 meters per hour. How many meters does Teacher Li walk in two hours? " Calculated by "3×5".
58. Use "there are 10 apple trees" to compile an application problem of total output, and then solve it.
59. Use "6 hours" to make up an application problem to find the total workload and a distance, and then solve it.
60. Tractors travel 300 meters per minute, trucks travel 300 meters more than tractors, and trucks travel how many meters in six minutes?
6 1. A building has 6 floors and is divided into 4 units. Each unit has 2 households on the first floor and 3 households on the second to sixth floors. How many households can live in this building?
62. A pencil used to be 8 cm and 7 mm long, but now it's 9 mm long. How long is this pencil now?
63. Wuhan Yangtze River Bridge is 1670 meters long, and Nanjing Yangtze River Bridge is 6772 meters long. Which bridge is long? How many meters has it grown?
64. The track of the sports ground is 400 meters. Xiaoming insists on running three times a day. How many meters does he run every day?
65. From A to B, if you ride a bike, you can drive15km per hour and get there in 4 hours. If you take a bus, it only takes 2 hours. How many kilometers does this car travel per hour?
66. A dormitory building has 20 steps between two floors, and the height of each step is 15cm. A classmate walked from the first floor to the third floor. How many meters did he rise?
67. The worker's uncle put the machine on a truck with a load of 4 tons, with 4 machines in each row and 3 rows. Each machine weighs 300 kilograms. Do these machines exceed the load of this truck? (oral answer)
68. Pigeons can fly 2 kilometers per minute, and swift flies 3 kilometers more than pigeons. How many kilometers can Swift fly per hour?
69. A grain store delivered 5 tons of rice, sold 1700 Jin two days ago, and sold out in the remaining three days. How many Jin did you sell on average every day in the first two days? How many Jin did you sell on average every day in the last three days?
70. Freshmen in Grade One 120. There are 40 people in a class. How many classes are they divided into?
7 1. The workers in the embroidery factory sewed 240 tablecloths with machines in 30 days. How many tablecloths do they poke on average every day?
72. Helicopters fly 360 kilometers per hour and trains travel 90 kilometers per hour. How many times the speed of this helicopter is that of the train?
73. A textile factory weaves 846 meters curtain cloth, and the bed sheet cloth woven is three times that of curtain cloth. How many meters does the sheet cloth weave more than the curtain cloth?
Subtract an integer from 74.450, divide the difference by this integer, and the quotient is 8. How much is this whole ten dollars?
75. A train car can hold 60 tons of goods. How many cars do you need to transport 480 tons of goods?
76. A pack contains 50 exercise books. There are 75 junior high school students, each of whom buys 4 copies. How many packs of exercise books do I need to buy?
77. Fill in the appropriate number in □ below.
□÷40=6 28
500÷□=7 10
78.20 Young Pioneers collected160kg apples. If each basket contains 20 kilograms, there are still two baskets missing. How many baskets are there?
79. A train runs at 95 kilometers per hour, and the distance from Xiaoming's home to the provincial capital is 285 kilometers. How many hours does it take Xiaoming to go to the provincial capital by train?
80. A road repair team has to repair 726 meters of road, and has already repaired 285 meters. How many days will it take to repair the remaining 63 meters a day?
8 1. Students exercise. There are 40 players and 280 runners, more than players. How many times do you run as much as you play ball?
82.( 1) The divisor is 32, the quotient is 7, the remainder is 25, and what is the dividend?
(2) The dividend is 359, and the quotient is 8. What are divisors and remainders?
83. A professional poultry farmer keeps 980 chickens, twice as many as ducks. How many ducks are there?
84. Xiaogang's family planted five apple trees and harvested 2 15 Jin of apples this year. There are four apple trees, each with an average harvest of 45 kilograms of apples. How many kilograms is the other one?
85. What number should I fill in the box, so that the quotient is a single digit with no remainder?
86. A basket knitting professional made 242 baskets in 28 days, 65,438+08 more than originally planned. How many baskets did you originally plan to make every day?
87. The grocery store sold 65,438+050 kilograms of eggs on the first day and 75 kilograms less than twice as much the next day. How many Jin of eggs did you sell the next day?
88. The school held a sports meeting. There are 384 athletes in class 16 * *. How many athletes are there in each class on average?
89. A woodworking team has to make 1450 tables. 640 copies have been made, and the rest will take 30 days to complete. How many sheets do you make on average every day?
90. The school bought 42 packs of exercise books, each containing 20 copies. Each class is divided into 84 books. How many classes can it be assigned to?
9 1. Shengli Orchard harvested 1 18 baskets of apples. How many times does the minivan need to transport 15 baskets at a time? How many baskets were shipped last time?
92. When calculating the division, Xiaolan writes the divisor 65 as 56, and the quotient obtained is 13 and 52. Think about it: What is the correct quotient?
93. Students clean up. There are 36 people cleaning the playground, three times as many as cleaning the classroom, and 27 people cleaning the yard. How many people took part in the cleaning work?
94. Students collect walnuts, 776 grams per job, and put them in a basket every 25 kilograms. How many baskets can you hold and how many kilograms are left?
95. The electric incubator can hatch 2880 chicks at a time, and a hen can hatch 16 chicks at a time. How many times the number of chicks hatched in the electric incubator is that of hens?
96. After the little swallow hatches, the big swallow feeds a little swallow with 9 10 pests for 26 days. What is the average daily feed?
97. On one side of the 24-kilometer-long highway, 4,300 poplars and 3,020 willows were planted. How many trees are planted per kilometer on average?
98. Students should plant 2500 trees. If each student plants 4 trees, how many students will take part in planting trees?
99. The school transported 3,920 kilograms of coal and planned to burn it for five months. How many kilograms will it burn on average every month?
100. Xinhua Hotel received 3046 passengers in June, 968 fewer than in June. How many passengers did you receive in July?
10 1. A manuscript of 1 185 words. The typist finished typing this manuscript in 6 minutes. About how many words does she type per minute?
102. Judge the right or wrong of the following questions and correct the mistakes.
(1) "It took three days to build a road with a length of 1200m. How many meters will be built on average every day? " Calculate with "1200÷3". ( )
(2) Knowing the number of walnut trees and the kilograms of harvested walnuts, finding the average yield of each walnut tree is the topic of finding the total output. ( )
(3) "A car travels 360 kilometers in 8 hours." It's a topic of distance. ( )
103. A jet plane flies 3600 kilometers in 4 hours. A car travels 60 kilometers per hour. How many times faster is this plane than this car? Can I ask other questions?
104. A power line with a length of 7200m was built from the county seat to Shengli Village. Three days later, there are still 2400 meters from Shengli Village. How many meters are erected on average every day? Work a day 10 hour, how many meters per hour?
105.( 1) The dividend is 3 15 and the divisor is 45. What is the quotient?
(2) Divide 160 by 25. What are quotient and remainder?
(3) How many times is139258?
(4) How many 6 1 6527?
106. Agricultural machinery station has 433 kilograms of diesel oil, which has been used for 5 days. How many kilograms are used on average every day?
107. Fill in the numbers in the box below, so that 9 numbers 1 to 9 appear once in each formula.
5769÷□□=□□□
5346÷□□=□□□
108. Red Star Primary School planted 140 trees last year, three times as many as last year. How many more trees have been planted this year than last year?
109. The students divided into two groups to pick persimmons in the vegetable garden. The first group picked 14 baskets, and the second group picked 2 baskets less than the first group, each weighing 25 Jin. How many kilograms did the second group pick?
1 10. An elephant in the zoo eats 450 kilograms of food every day, and a panda eats 72 kilograms of food for four days. How many times does an elephant eat as much as a panda every day? How much food does it eat more than a panda every day?
1 1 1. Students plant trees. Class One will plant 58 trees and Class Two will plant 67 trees. Plant 5 rows on average. How many trees are planted in each row? (column synthesis formula solution. )
1 12. A passenger ship departed from Chongqing on August 30th 1 1: 00 and arrived in Wuhan on September 30th 17: 00. Voyage from Chongqing to Wuhan 1354 km. How many kilometers does this passenger ship travel per hour except for six hours at the dock?
1 13. The school organizes students to visit the museum. Sixty-two people are in the third grade, and the number of people in the fourth grade is twice that of the third grade. How many people are in two grades?
1 14. Middle and senior students listened to the reports of scientists. There are 84 students in the middle grade, and the number of students in the senior grade is three times that in the middle grade. How many people are listening to the report?
1 15. Miss Wang wants to correct 48 compositions, and has changed 12. If you grade six compositions per hour, how many hours will it take to grade the rest?
1 16. Guangming cinema used to show three times a day, but now it shows 1 show every day, and it sells 160 tickets on average. How many tickets can be sold every day now? (column synthesis formula solution. )
1 17. Zhongying Village built two canals with a total length of 604 meters last year. The length of the canal built this year is three times that of last year. How many meters more have been built this year than last year?
1 18. The main bridge of Nanjing Yangtze River Bridge has a span of 10, of which 9 spans are all 1 60m and1span is128m. How long is the main bridge (10 span)?
1 19. Two cars carry apples, the first car carries 35 baskets, and the second car carries 38 baskets. The second car carries 75 kilograms more than the first car. How many kilograms of apples are there in each basket on average? How many kilograms did the first car carry?
120. Xiaohong's family raised 4 boxes of bees this year and * * * received 380 Jin of honey. Last year, each box received an average of 84 kilograms of honey. How many kilograms is the average honey output per box higher this year than last year?
12 1. A passenger ship departed from Chongqing on August 30th 1 1: 00 and arrived in Wuhan on September 30th 17: 00. Voyage from Chongqing to Wuhan 1354 km. How many kilometers does this passenger ship travel per hour except for six hours at the dock?
122. Tintin, Xiao Qiao and Xiaoya each planted 27 trees. How many trees have they planted?
123. On the first morning, the department store sold 372 clothes, 39 more than in the afternoon. How many pieces did you sell in the afternoon?
124. A sheep weighs 900 grams, and a pig is six times that of a sheep. How many grams does a sheep weigh?
125. The grocery store has 9 10 boxes of cakes, and 178 boxes have been sold. How many boxes are left? Another 258 cases were brought in. How many boxes are there now?
126. This compact car weighs 29 kilograms, 9 kilograms lighter than Xiao Pang. How many kilograms does this compact weigh?
127. After my father bought a new book 18 1, there are now 900 books on the shelf. How many books are there on the shelf?
128. A book has 450 pages. Xiaojun reads 29 pages every day for 8 days. How many pages did Xiaojun read? How many pages are left?
129. Divide 86 books into 9 categories on average. How many books can each class be divided into? How many books are left?
130. Mom bought 45 apples and 9 raw pears. How many times does the apple have?
13 1. The store bought 4 boxes of soap, each containing 90 yuan. How many pieces did you buy?
132. Aunt Wang raised 6 hens and 8 cocks, and laid 48 eggs. How many eggs does each chicken lay on average?
133. There are 40 peach trees in the park. The number of willows is 10 times that of peach trees. How many willows are there?
134. There are 43 buttons, with an average of 5 buttons for each dress. How many clothes can you nail? How many buttons are left?
135. Auntie bought 8 boxes of chocolates, each containing 20 capsules. How many capsules are there in a box? I ate 28 tablets. How much is left?
136. There are 6 cars parked in the parking lot, and each line has 14 cars. How many cars are there in a car?
137. 203 cases of eggs, ducks and eggs, including eggs 156 cases. How many boxes of duck eggs are there?
138. Buy a chair 8 yuan, round table 72 yuan. How much is the round table?
139.9 How much does it cost to buy a pencil for 60 pencils?
140. There are 42 soccer balls, 75 table tennis balls and 38 San Mao balls in the gymnasium. How much more table tennis is than three hair balls? How many three kinds of balls are there?
14 1. Students plant trees. Four people plant eight trees. How many trees are planted per person on average?
142. Chaochun Primary School was rated as "Chaochun Star". There are 25 students in grade three, 8 fewer than in grade four. How many students are there in the fourth grade?
143. The bookstore sold 420 story books on the first day and 149 on the second day. What's the difference between the first day and the second?
144. The fruit shop has 24 boxes of oranges, 8 boxes of apples and 4 boxes of raw pears. How many times are there more oranges than apples? How many times are there more boxes of apples than those of raw pears?
145.56 students jump rope, every 8 people in a group, how many groups can they be divided into? There are 60 dances in each group. How many dances are there in each group?
146. Xiao Qiao did 29 questions, and there are still 28 left to do. How many questions should I do?
147. Chengguan Primary School launched the activity of "I am a little guardian of environmental protection". Class 3 (1) students found 369 discarded plastic bags, Class 3 (2) found 44 1, and Class 2 * * * found () discarded plastic bags.
148. 1 1 There are 23 passengers on the bus, 8 people get off at the post office station and get on the bus 10. There are passengers on the bus now ().
149. The movie "Harry Potter and the Goblet of Fire" will be shown in the Overseas Chinese Cinema, and I obviously want to go to see it with my parents. If the fare of each ticket is 18 yuan, then a * * * will cost () yuan.
150.32 teacups, every 6 teacups are packed in a box, which can hold () boxes, and there are () cups left.
15 1. One desk lamp 98 yuan, it costs about () yuan to buy five such desk lamps.
152. It takes 4 minutes for one person to sing a song, and 15 takes () minutes to sing this song.
153. One bag of washing powder weighs 800g, and five bags of such washing powder weigh () kg.
154. Shanshan is three years older than Binbin this year, and five years later, Shanshan is () years older than Binbin.
155. The typist has to type an 83-page manuscript, 20 pages have been typed in the first three days, and the rest should be typed within one week. How many pages do they type on average every day?
156. Zhang Jun bought a bag of rice at home, and ate an average of 2 Jin a day, leaving 7 Jin after eating for 9 days. How many kilograms is this bag of rice?
157. Li Ping borrowed a 60-page story book from the school library for a week. He plans to read 8 pages every day. Can he return the book on time?
158. A rectangle with a length of 25 cm and a width of 18 cm is surrounded by a wire. How long is this wire at least?
159. The new teaching building of the school has five floors, each floor has three classrooms, and each classroom has six fluorescent lamps.
Can you ask two different questions and answer them according to the information provided above? Try it, I believe you can do it!
Question 1: Question 2:
160. Dongdong has 32 albums. After giving Qingqing six albums, the number of albums of both of them will be the same. Qingqing's original picture book ().
16 1 .45 books were written in Class Three, 28 books in Class One and Class Two, and 30 books in Class Two and Class Three. Then one class takes () this book, two classes take () this book and three classes take () this book.
162. The school launched the "I can do it" club activity. The number of people who signed up for "Table Tennis Teenagers" is twice that of "Campus NBA", and there are 2 1 more known "Table Tennis Teenagers" than "Campus NBA". There are () people who signed up for the "Table Tennis Teenager".
163. Workers' uncles built roads for 7 days, with an average of 39 meters a day. How many meters did he repair?
164. There are 383 students in grade two, 29 more than those in grade three. How many students are there in grade three? How many people are there in two grades?
165. Xiao Gang scored 53 points. How many can I buy for an eraser of 80 cents? How much is left?
166. There are 3 1 day in January, how many weeks are there, and how many days are left?
167. Road team built a road 1500m, which has been repaired for 300m. It will be repaired in the remaining six days. How many meters will be repaired on average every day?
168. The track of the sports ground is 400 meters. Uncle Wang insists on running two and a half laps every day. How many meters does he run every day?
169. Xiaoli walks for about 50 cents. She walked 540 steps from home to school. Calculate, how many meters is it from her home to school?
170. The light blue height 134 cm, and the east thing is 5 cm higher than the light blue. How many centimeters is Dongdong tall?
17 1. There are 257 boys and 235 girls in the third grade of Red Scarf Primary School. There are 387 people who have undergone physical examination. How many people don't?
172. The library has lent out 456 books, with 207 books left, and now it has returned 285 books. How many books are there in the library now?
173. Red Scarf Primary School bought 380 balls and 70 soccer balls, and borrowed 423 balls during extracurricular activities. How many balls are left in the school now?
174. Class 3 (2) donated 400 books, with 273 books left. Now we have bought 125 books. How many books are there in Class Three (2)?
175. Dongdong wants to use 3 10 yuan to buy a scooter, which has been deposited in 200 yuan. If he deposits in 30 yuan every month, a few more months will be enough.
176. The students of Dongfanghong Primary School donated 900 books for Project Hope, including 326 story books, 475 science books and the rest comic books. How many comic books are there?
177. The side length of a square is 8 cm. If you increase its side length by10cm, how many centimeters will its perimeter increase?
173. The circumference of the rectangular playground is 400 meters, and the length is three times the width. What is the length and width of this playground?
174. There are two identical rectangles with a length of 8 decimeters and a width of 4 decimeters. If you put them together into a rectangle, what is the circumference of the rectangle? What is the circumference of a square if it is spelled into a square?
175. Dongdong borrowed a 40-page science and technology book and returned it a week later. He intends to read six pages every day. Can he return it on time?
176. There are 44 students in Class 3 (2). The teacher is going to divide them into eight groups for discussion. How many people are left in each group?
177. A piece of 4-meter-long cloth can be cut into five vests of the same size. How much cloth does it take to make a vest?
178. An elephant weighs 4 tons. How many elephants can a large truck with a load 10 ton carry at a time?
179. 632 bags of dry bottles in Hongqi chain store, 385 bags were sold and 200 bags were shipped. How many bags of dry bottles are there in the shop at this time?
180. The school bought 8 10 exercise books, and took them away from the first grade 168, and took them away from the second grade 165. How many books are left?
18 1. There are16 people in car 10 of a train. After arriving at a station, 58 people got off and 45 people got on. How many people were there in this car when we drove again?
182. A VCD costs 238 yuan and a scanner costs 458 yuan. Dad brought 800 yuan. Is it enough?
183. Uncle Zhang caught 700 Jin of fish, sold 523 Jin in the morning, and sold 394 Jin less than in the morning.
(1) How many Jin did you sell this afternoon? (2) How many kilograms did a * * * sell on this day? (3) How many kilograms are left?
184. Xiaoming and his sister go to the bookstore together. My sister bought an English dictionary, 87 yuan, and Xiaoming bought a science and technology book, 24 yuan. My sister paid the cashier 150 yuan. How much should I get back?
185. Make a picture frame with a length of 30cm and a width of 26cm. What is the circumference of the photo frame at least?
186. Make a big rectangle with two rectangles 4 cm long and 3 cm wide. What is the circumference of a big rectangle?
187. Xiangyang primary school playground is rectangular, with a length of 100 m and a width of 65 m. Xiao Qiang ran around the playground twice. How many meters did Xiao Qiang run?
188. 3 students1person, 2 teachers. Each ship is limited to four people. How many boats should I rent at least?
189. A pair of China chess 16 yuan, a pair of checkers 12 yuan, and a pair of Go is three times the sum of a pair of China chess and a pair of checkers. Xiao Ming takes 80 yuan, is it enough to buy a pair of Go?
190. The students proposed to donate 400 books to Hand in Hand School. 58 books were donated from grade one to grade six. How many books do I have to donate to reach 400?
19 1. Plant trees in spring. Plant 12 in the fifth grade and 16 in the sixth grade. The number of trees planted in the whole school is three times that of the fifth and sixth grades. How many trees have been planted in the whole school?
192. There used to be 30 students, but now there are 15. There are five students in a row. How many rows can they line up?
193. Make a square with a 36 cm iron wire. How long are the sides of this square?
194. A rope is 25 meters long. Cut 10 meter first, and make a short jump rope every two meters for the rest. How many short jump ropes can you make? How many meters are left?
195. Cut a rectangular piece of paper with a length of 36 cm and a width of 18 cm into two largest squares. What is the circumference of a square?
196. A rope is 5 times 45 meters, and a wire is 7 times that of this rope. How long is this wire?
197. To build a 945-meter road, 354 meters were built in the first month, 276 meters in the second month, and how many meters will be completed in the third month?
198. The supermarket sold 153 kg of rice in the morning, and sold 56 more bags in the afternoon than in the morning. How many bags of rice did the worker sell today?
199. The fruit shop returned 54 baskets of fruit, 48 of which were apples and the rest were pears. How many times are there more apples in baskets than pears?
200. A car travels 55 kilometers per hour. According to this calculation, how many kilometers can you drive in 4 hours?
32 white rabbits and 26 black rabbits were raised in 20 1. The number of grey rabbits is less than the total number of white rabbits 18. How many gray rabbits will you raise?