There are 50 goats, 3 more than 4/5 goats. How many sheep are there?
3. Read a book with 120 pages. You read the whole book 1/3. How many pages are exactly 5/6 of the whole book?
4. A bottle of oil is 4/5 Jin, and 3/ 10 Jin has been used. 1/2 how many kilograms of oil does it take?
5. A bag of rice 120kg. On the first day, you eat 1/4, and on the second day, you eat the rest 1/3. How many Jin did you eat the next day?
6. For a batch of goods, one car can transport 1/8 at a time, and how many parts can be transported four times? If the cargo weighs 1 16 tons, how many tons have been shipped?
7. A factory used 28 tons of water in September,1planned saving in October 1/7. /kloc-How many tons do you plan to save in October?
8. The base of parallelogram is 24 meters long and its height is 3/4 of the base. What is its area?
9. Human blood accounts for113 of body weight, about two-thirds of blood is water, and dad's weight is 78kg. How many kilograms is his blood?
10, Grade 6 students participated in tree planting, boys planted 160 trees, and girls planted 5 more trees than 3/4 boys. How many trees do girls plant?
1 1. The number of students in the fourth grade of Guangxin Primary School is 4/5 of that in the fifth grade, and that in the third grade is 2/3 of that in the fourth grade. If the number of students in grade five is 120, how many are there in grade three?
12, two cars A and B leave from A and B at the same time, with a distance of 420km. After 5 hours, A walked 3/4 of the whole journey and B walked 2/3 of the whole journey. How many kilometers are the two cars apart?
13, 120 trees were planted in grade five, and the number of trees planted in grade six was 7/5 of that in grade five. How many trees were planted in the fifth and sixth grades?
14. A road of 12/5km was built. 2/3km was built in the first week and 1/3 was built in the second week. How many kilometers were built in two weeks?
15. A highway is 7/8 kilometers long. 1/8km was built on the first day. How many kilometers will the total length of 1/2 be more?
16, Xiaohua read a 96-page story book. The first day he read 1/4, and the next day he read 1/8. How many pages have you read in two days?
17. A book has 150 pages. On the first day, Xiao Wang read110, and on the second day, he read115. Which page should he start from on the third day?
18, the school transported 2/5 tons of cement, and the yellow sand transported was 5/8 of the cement, which was 1/8 tons more. How many tons of yellow sand were shipped?
19, Xiao Wei and Xiaoying contributed 2 :5 to Project Hope. Xiaoying donated 35 yuan. How much did Xiao Wei donate?
The TV factory plans to increase its output by two-fifths this year compared with last year. Last year,1/50,000 TV sets were produced. Tens of thousands of TV sets are planned to be added this year?
2 1. A village wants to dig a canal with a length of 2700 meters, and it has already dug 1050 meters. How many meters does it take to dig two thirds of this canal?
22. Young Pioneers in a school collect tree species. In the fourth grade, they received1/2 kg; The fifth grade is more than the fourth grade1/3 kg; In the sixth grade, they collected 6/5 of the fifth grade. How many kilograms of tree species were collected in the sixth grade?
23. The warehouse shipped 240 tons of rice, 5/6 tons of soybean and 3/4 tons of flour. How many tons of flour were delivered?
24. A basket of apples is 9/ 10 Jin. Give B a basket of apples 1/9. A and B are equal. How many Jin of apples do you want?
25, a barrel of oil poured out 2/3, just poured out 36 kilograms, how many kilograms was this barrel of oil originally?
26. Two engineering teams, Team A and Team B, built 360 meters of roads. The length ratio of Team A and Team B is 5: 4. How many meters did Team A build more than Team B?
27. The number of workers in the first workshop of garment factory is 150, and the number of workers in the second workshop is 2/5 of that in the first workshop. The number of workers in the two workshops is just 5/6 of the total number of factory workers. How many workers are there in the whole factory?
28. A batch of fruits 120 tons, of which pears account for 2/5 of the total and apples account for 4/5. How many kilograms of apples are there?
29. The sum of numbers A and B is 120. Give 1/3 of A and B, and the ratio of A to B is 2:3. What is the original A?
30. Xiaohong collected 24 specimens and sent 4 to Xiao Fang. Xiaohong is just 4/5 of Xiao Fang. How many are there in Xiaofang?
3 1, two barrels of oil * * * weigh 27kg. After 2 kg of oil was used in the big barrel, the weight ratio of the remaining oil to the small barrel oil was 3: 2. How many kilograms of oil was there in the barrel?
32. The length of a cuboid is 144 cm, and the ratio of length to width to height is 4:3:2. What is the volume of a cuboid?
33. Xiaohong has 60 stamps and Xiaoming has 40 stamps. How much does Xiaohong give to Zhang Xiaoming? The number of stamps between them is 1: 4?
34. Wang Hua walked from home to school at a speed of 4 kilometers per hour, and it took 1/6 hours to complete 2/3 of the whole journey. How far is Wang Hua's home from school?
35. Three looms weaved 72 meters in 3/2 hours. How many meters does each loom weave on average per hour?
36. A car can travel 9/2 kilometers with 9/25 liters of gasoline. How many meters can 3/5 liter gasoline travel?
37. There is a triangular iron sheet with an area of 3/5 square meters. Its bottom is 3/2 meters. How many meters is its height?
The fruit shop sent 50 baskets of pears and apples, of which the number of pears was 2/3 of that of apples. How many baskets of pears and apples have been sent?
39. A right triangle is surrounded by a 24cm wire. The ratio of the lengths of the three sides of this triangle is 3: 4: 5. What is the area of this right triangle? What is the height of the hypotenuse in centimeters?
40. The circumference of a rectangle is 49 meters, and the ratio of length to width is 4: 3. What is the area of this rectangle?
4 1, Party A and Party B walk in opposite directions from Party A and Party B at the same time. Party A walks 100 meter per minute, and the speed ratio with Party B is 5: 4. Five minutes later, they just walked three-fifths of the distance. How many meters is there between A and B?
42. A primary school expanded its school building and originally planned to invest 280,000 yuan. The actual investment is less than the original plan 1/7. What is the actual investment?
43. The toy factory planned to produce 2000 game machines, which actually exceeded110. How many sets were actually produced?
44. A wire is 40 meters long. First 3/8 meters, then 3/8 meters. How many meters is left in this wire?
45. The price of a book first increases 1/6, and then decreases 1/6. Is this book high in original price or current price?
46. A book is *** 100 pages. Xiao Ming reads 1/5 on the first day, 1/4 on the second day, and the rest on the third day. How many pages did he read on the third day?
47. bright primary school1October saves water 1/9, and1October uses 72 tons of water. How many tons of water were used in September?
48. Build an expressway. After 3/7 of the total length, there is still 1.7 meters from the midpoint of this highway. How long is this road?
49. There are 60 computers in bright primary school, more than primary schools in Ai Wu 1/5. How many computers are there in Ai Wu primary school?
50. There are 60 computers in bright primary school, which is less than that in primary schools in Ai Wu 1/5. How many computers are there in Ai Wu primary school?
5 1, I ate a bag of rice for two weeks, the first week 1/3, and the second week was 5 kg more than the first week. How much does this bag of rice weigh?
52. Xiaoming reads, and the number of pages he has read is 3/2 of the number of pages he has never read. He read another 30 pages. At this time, the number of pages he has read is 7/3 of the number of pages he has not read. How many pages are there in this book?
53. The number of small white rabbits raised in the feeding group is 3/5 of that of small gray rabbits, with 24 more small gray rabbits. How many rabbits are there?
54. A fishing boat catches 1200 kg in the morning, which is less than that in the afternoon 1/7. How many kilograms can it catch a day?
55. A barrel of oil was poured out 1/5 for the first time, 15 kg for the second time and 1/3 for the third time, leaving 25/3 kg. How many kilograms is this barrel of oil?
56. One road has been repaired with the total length of 1/3. If it is repaired by 60 meters, it will be repaired by half of its total length. How long is this road?
57. There are 480 cows in the pasture, 1/5 more than last year, and how much more than last year?
58. It takes 3 hours for Party A to type a single document, 5 hours for Party B, and how many hours does it take for Party A and Party B to type half a document together?
59. Multi-functional cleaning teachers, students in group A can finish cleaning in 1/3 hours and students in group B can finish cleaning in 1/4 hours. If Party A and Party B work together, how many hours can they clean the whole classroom?
60. On the same road, Party A takes 20 minutes and Party B 18 minutes. How much slower is Party A than Party B?
Two math application problems in the sixth grade of primary school 1. Solution: circumference: 31.4 * 3 = 94.2cm.
Radius = perimeter /2/3. 14
=94.2/2/3. 14
=15cm
Answer: The radius of this circle is 15 cm.
2. Solution: circumference: diameter *3. 14
Circumference = 80 * 3.14 = 251.2cm.
Minute: 251.2 *100 = 25120cm.
Bridge: 25120 *10 = 251200m = 2512m.
Answer: So this bridge is 25 12 meters long.
Question 1:
25 * 2/(110-115) =1500 (m)
Question 2:
According to "one * * * only needs 880 yuan, you can know that there are 1 100 people in two groups * *. The original payable amount is 1 166 yuan, that is, a group has less than 50 people. If there are X people in the small group and 16544 in the other group.
12X+( 1 10-X)* 10 = 1 166
2X = 1 166- 1 100
2X=66
X=33
1 group 33 people actually paid 264 yuan, while another group 1 10-33 = 77 people paid 6 16 yuan.
Math application problem and solution in the sixth grade of primary school: suppose there are x balls of three colors, then the red ball is 1/4 and the yellow ball is x- 100.
[ 1/4x+(x- 100)]* 1/5 = 100- 1/4x
1/4x-20 = 100- 1/4x
x=240
Then there is 240- 100= 140 yellow ball.
Solution: Set the rope at x meters.
( 1/2x- 1)* 1/2 =( 1/3x- 1.5)* 1/ 1
1/4x- 1/2 = 1/3x- 1.5
x= 12
12 divided by 2 equals 6,6-1= 5, 5 divided by 2 equals 2.5m, rope length 12m and trunk circumference of 2.5m. ..
Solution: Suppose there are x adults and 100-x children.
4x+( 100-x)* 1/4 = 100
x=20
100-20=80, 20 adults and 80 children.
1000/[4/7-(1-4/7) * (3/4)] This is the workload completed by A during the cooperation period. When finished, A typed seven-quarters of this document. So 4/7-9/28= 1/4 This is the amount of work done by A alone, that is, 1000 is 1/4 of the total. Find the whole by parts: 1000/( 1/4)=4000.
1、 1000×( 1+4.68%)×2=2093.6
2、30÷(2/5-25%)=200
3、(200- 120)÷ 120≈66.67%
4、20×( 1+60%)=32
Problem-solving skills
By analyzing the meaning of the question, we can know that this question can be solved by equation method. Can you find the equivalence in the problem?
First, let's assume that this cement factory planned to produce x million tons of cement last year. According to the known conditions, it is not difficult to list the equation 2.4+20% x = 35x；;
Next, according to the basic properties of the equation, the value of x can be obtained by solving the above equation. Do it yourself!
explain
The establishment of this cement plant produced x million tons of cement last year, then
2.4+20% x = 35 times
solve
x=6
This cement factory planned to produce 60,000 tons of cement last year.
The sixth grade math application problem math application problem 1. The park has planted 600 trees this year, of which 1 is poplar and 2/5 is cover grass. What kind of tree is more valuable? How much more?
600 1/3=200
600x2/5=240
240-200=40
There are many locust trees, more than 40.
2. Wang Liang reads a story book with 120 pages. He reads 1 in this book every day. He has been reading for three days. How many parts are left in this book? How many pages have you read?
1- 1/ 10x 3 = 7/ 10
120x 1/ 10x3
= 12x3
=36
I haven't read this book for 7/ 10, and I have read 36 pages.
Let me ask you a little question: 2/ 1=2/ 1 or 1/2. Is there a unit after the score?
2/ 1 is two-tenths of 1 and has no unit.
The sixth grade math application problem in primary school is urgent! What about the topic? .