(1) The fifth-grade students planted trees. 13 or 14 each group just finished. How many students took part in planting trees in grade five?

13X 14= 192 (person)

Answer: At least 192 people participated in tree planting in the fifth grade. (2) Party A and Party B typed a document of 10000 words. A typed 1 15 words per minute, and B typed 135 words per minute. How many minutes will it take?

10000 ÷ (115+135) = 40 (point)

A: It will be completed in 40 minutes. (3) There are 57 balls in the sporting goods store, and every three balls are packed in a box. Can they be packed accurately?

57÷3+ 19 (box)

A: I can just finish it. July 6th

(1) Two cars start from the same place. One car travels at a speed of 3 1 km per hour, and the other car travels at a speed of 44 km per hour. How many minutes later, the two cars are 300 kilometers apart?

Solution: Two cars meet after X point.

3 1X+44X=300

75X=300

X=4

4 hours =240 minutes

Answer: After 240 minutes, the distance between the two cars is 300 kilometers. (2) The school chorus and dance team 140 people, 6 times as many as the dance team. How many people are there in the dance team?

Solution: There are X people in the dance team.

6X+X= 140

7X= 140

X=20 people

A: There are 20 people in the dance team. (3) On Children's Day, Mr. Wang bought 360 biscuits, 480 sweets and 400 fruits, made exquisite gift packages and distributed them to children as gifts. How many gift packages can he make at most?

360+480+400= 1240

A: You can make up to 1240 small gift packages. July seventh.

(4) Trapezoidal corn field, with upper bottom 15m, lower bottom 24m and height 18m. There are 9 corn plants per square meter on average. How many corn can be planted in this field?

( 15+24)x 18÷2 = 35 1 m2

35 1X9=3 195 (strain)

A: This land can grow 365,438+059 maize plants. (2) The number of students in one class is insufficient 100. When waiting in line, there is just one more person in each row of 5, 4 or 3 people. How many people are there in this class?

5X4X3=60 people 60+ 1=6 1 (person)

Answer: There are 6 1 students in this class. (3) Wang Yue has a box of chocolate candy, and the number of chocolates 7, 5 and 3 is 1. How many chocolates are there in this box?

7X5X3= 105 capsules 105+ 1= 106 capsules.

There are at least 106 chocolates in this box.

July 8(th)

(1) has two parallelogram experimental fields with the same area. One is 70 meters long, 45 meters high and the other is 90 meters long. What's your height?

70x45 = 3150m23150 ÷ 90 = 35 (m)

Answer: The height is 35 meters. (2) A batch of steel pipes are stacked into a pile, with the bottom layer 10, the top layer 1 less per layer 1 less, and the top layer 1 layer with 5 pieces less. How many steel pipes are there in this batch? 10-5+ 1=6 floors (10+5)X6÷2

= 15X6÷2

=90÷2

A: There are 45 steel pipes in this batch.

(3) A shoe factory produces 3,860 pairs of men's shoes, twice as many as women's shoes. How many pairs of women's shoes has it produced?

3860÷2= 1930 (double precision)

Answer: I made 1930 pairs of women's shoes.

July 9(th)

(1) built the canal, 840m has been built, and120m has not been built. How many times have you repaired it?

(2) 38 militiamen practiced shooting, and one of them hit the 1026 ring. How many times did each militia fight on average?

(3) 64 white rabbits were raised in the feeding group, which was four times that of the gray rabbits. How many gray rabbits have you raised?

July 10

(1) The experimental primary school buys a composition guidance book at the price of 12 yuan for each of the third and fourth grade students. It is known that there are 145 students in grade three and 155 students in grade four. How much are the two grades?

(2) The length of the railway from Nanjing to Jinan is 540 kilometers. A train leaves from Nanjing and arrives in 9 hours. How many kilometers does this train travel per hour on average?

(3) Wuhan Battery Factory can produce 2400 batteries a day, and every 600 batteries can be packed in a box. How many boxes of batteries can be produced this day?

July 1 1

(1) There are two classes in Grade Three, each class has 45 people, and one * * * cuts vegetables 8 10 kg. How many Jin of vegetables does each student cut on average?

(2) Hongshicun Primary School is divided into 6 groups to water trees, with 4 people in each group and 360 trees in each group. How many trees does each person water? 4×6=24

360÷24= 15 (tree)

Answer: On average, each person watered 15 trees.

(3) Grandpa Zhang bought three lambs and used 75 yuan. He wants to buy five more lambs. How much will it cost?

75÷3=25 (yuan) 25×5= 125 (yuan)

A: You need to prepare 125 yuan.

July 12

(1) Uncle Liu took 700 yuan to buy fertilizer, bought 16 bags of fertilizer, and left 60 yuan. What's the price of each bag of fertilizer?

700-60=640 (yuan) 640÷ 16=40 (yuan)

A: Every bag of fertilizer is 40 yuan.

(2) There are 1028 students in a school, 189 sixth-grade graduates and 208 freshmen. How many students are there in the school now?

(3) Grandpa is 72 years old, which is exactly six times Xiaodong's age. How old is Xiaodong this year?

July 13

(1) There used to be 20 boats in the park, earning 360 yuan every day. According to this calculation, there are now 15 ships. How much does a * * * earn every day? 360÷20= 18 (yuan) 18× 15=270 (yuan)

360+270=630 (yuan)

A: A * * * earns 630 yuan.

(2) Xiaohong bought two pencils and three exercise books, one cost 3.9 yuan money, and each pencil cost 0.6 yuan. How much is each exercise book?

(3) A story book has 350 pages. Xiao Ming reads 70 pages, and the rest read 40 pages every day. How many days will it take to finish it?

350-70=280 (pages) 280÷40=7 (days)

July 65438, 2004

(1) The school bought 6 packs of notebooks with 30 copies each, and distributed them to 23 classes on average. How many copies did each class get?

(2) 12. Build a 500-meter expressway, 80 meters on the first day and 75 meters on the second day. How many meters are left?

(3) There are 52 students in Class One, 49 students in Class Two and 52 students in Class Three in Grade Four. How many people are there in each row when doing radio exercises? (52+49+52)÷9

= 153÷9

= 17 (person)

A: Each row 17 people.

July 15

(1) A ship carries 5000 tons of cargo, which is 625 times that of a wooden ship. How many tons can a wooden boat carry?

(2) Three classes in Grade Four organized a chorus of 72 people, 23 in Class One and 28 in Class Two. How many people are there in Class Three?

(3) There are 140 red goldfish in fish ponds, 45 fewer than those in Huang Jinyu, and how many in Huang Jinyu?

July 16

(1) There are 95 books on the shelf. After Xiaolin took some, there were still 68 books on the shelf. How many copies did you take?

(2) 48 animals in the feeding group, 4 animals in each cage. How many cages does a * * * need?

(3) Thirty-six students participated in the kite competition and were divided into 9 groups on average. How many people are in each group?

July 65438, 2007

(1) There are 84 pots of Chinese rose in the greenhouse, which is four times that of jasmine pots. How many pots of jasmine are there?

(2) The cargo carried by the ship is 5000 tons, which is 625 times that of the wooden ship. How many tons can a wooden boat carry?

(3) There are 8 rows of peach trees in the orchard, each row is 14. Excluding some, there are 82 trees. How many trees have been removed?

8× 14-82

= 1 12-82

=30 (tree) A: 30 trees were removed.

July 18

(1) Students take part in brick moving, and each student moves 4 bricks at a time. According to this calculation, how many bricks can 50 people 10 move?

(2) The scores of Chinese and foreign languages in the junior high school entrance examination are 94, and the score of math 100. What is the average score of three subjects?

(3) There are 36 male workers and 36 female workers in a weaving factory, 5 times more than male workers. How many employees are there in this factory?

July 2009, 65438

(1) Uncle Wang fertilizes a paddy field with a length of 800 meters and a width of 400 meters, and fertilizes 250 kilograms per hectare. How many kilograms should a * * * fertilize? 0× 400 = 320,000 (square meter)

320,000 square meters =32 hectares 32× 250 = 8,000 (kg)

A: One * * * fertilizes 8000 kilograms.

(3) A square piece of land with a side length of 300 meters receives 36 tons of Chinese cabbage. How many tons are collected per hectare on average? 300×300=90000 (square meter)

90,000 square meters =9 hectares 36÷9=4 (tons)

A: The average income is 4 tons per hectare.

(4) The train traveled 200 kilometers from City A to City B, which is four times the remaining distance. How many kilometers are the two cities apart?

200÷4=50 km 200+50=250 km

A: It's 250 kilometers apart.

July 20(th)

(1) Xiaoming's home is 600 meters away from school, and it takes 10 minutes to walk. According to this calculation, it is1080m from Xiaoming's home to the bookstore. How many minutes does he have to walk?

600÷ 10=60 (meters) 1080÷60= 18 (minutes)

A: He will walk 18 minutes.

(4) The store shipped 300 bags of chemical fertilizer, 50 kg each, and sold 120 bags. How many kilograms are left?

300× 50- 120× 50 = 9000 (kg)

A: There are 9,000 kilograms left.

③ There are 24 hens in Jia Xiaoli, more than cocks 18. How many times is the hen?

24- 18=6 (only) 24÷6=4

Answer: There are only four times as many hens as cocks.

July 2 1 day

(1) A primary school student spends 40.5 yuan to repair desks and chairs, but 3.7 yuan spends less on binding books than repairing desks and chairs. How much did it cost to repair tables and chairs and bind books?

40.5—3.7=36.8 (yuan) 36.8+40.5=77.3 (yuan)

A: A * * * cost 77.3 yuan.

(2) The distance between Party A and Party B is 420km. It is planned that a car will travel from A to B for 7 hours and actually travel 70 kilometers. Actually arrived a few hours earlier than planned.

420÷70=6 (hours) 7-6 = 1 (hours)

A: It arrived 1 hour ahead of schedule.

(3) Students in Grade Four planted 128 trees, and Grade Four planted 20 more trees than Grade Three. How many trees should be planted in the third and fourth grades?

(128-20)÷2=54 (tree) 54+20=74 (tree)

A: 54 trees were planted in the third grade and 74 trees were planted in the fourth grade.