(2) The difference between 90 and a number is divided by 450 to get 10, which is ().

(3)380 minus a number, 150 gets 350, which is ().

(4) 15 is 25 times the sum of a number, the product is 5000, and this number is ().

. Column synthesis formula calculation.

How much is the quotient of (1) 17 divided by 782 less than 150?

(2) How much is1030 more than the product of 28 times 35?

(3) How much is the difference between1240 and 740 and 295?

(4) How much is the difference between 47 times of18 and 1200?

Column composition formula calculation.

What is the product of (1)26 times the difference between 98 and 59?

(2) What is the quotient of 3588 divided by the sum of 108 and 48?

(3) What is the difference between 765 and 387 multiplied by 24?

(4) What is the sum of 2319 and11311divided by 235?

Column composition formula calculation.

What is the product of the difference between (1)42 times 39 1 and 145?

(2) What is the quotient of 27 divided by 3923 and 1234?

(3) What is the sum of 24 and 3 1 divided by 3630?

(4) What is the product of125 and 69 multiplied by 38?

Rewrite the following formula into words.

( 1) 1350- 14×27

(2)2852÷23- 1 15

(3) 132×(494-458)

(4) 1245÷(29+54)

choose Fill in the brackets with the serial number of the correct answer.

(1) 1749 minus the product of 46 times 38, what's the difference? The correct formula is [].

a . 1749-46×38 b .( 1749-46)×38

c . 1749-38×46d . 38×( 1749-46)

(2) What is the quotient of 36 divided by the sum of 18 and 450? The correct formula is [].

a . 36÷ 18+450 b . 18+450÷36

c . 36( 18+450)d .( 18+450)

Rewrite the following questions into two different narrative ways.

( 1) 160+368÷23

(2)64×27- 1325

(3)(403+59)×34

(4) 266÷( 14 1- 122)

. Column synthesis formula calculation.

(1) 1800 minus the product of 15 times 24, what's the difference?

(2) What is 434 plus 16 36?

(3) What is the product of15 times 18 divided by 27?

(4) What is the difference between 602 plus 13 times 14 and 750?

1) 130 plus the product of 20 and 5 is ().

(2)7 divided by 280, minus 25, the difference is ().

(3) 100 minus the quotient of 240 divided by 8, the difference is ().

(4) The product of 8 and 25 plus 70 is ().

Column composition formula calculation.

How much is (1)58 1 minus 6 72?

(2) What is 27 times 46 times 382?

(3) How much is1450 more than 69 16 times?

(4) What is the difference between 785 minus 1476 and 12?

Column composition formula calculation.

What is the sum of (1) 292 and 269 multiplied by their difference?

(2) What is the quotient of14 25 divided by 84 minus 34?

(3) 14 1 Subtract the product of 12 and 1 1 and add 65. How much do you get?

(4) What is 273 plus 13 multiplied by 27 and divided by 26?

Rewrite the following items into text questions.

( 1)37×24-408÷ 12

(2)( 16+72)×(69-53)

(3) 105×( 143-62 1÷9)

(4)(75+ 105÷5)÷ 16

Rewrite the following questions into two different narrative ways.

( 1) 18 1- 15×9+76

(2)564+3 15-672÷32

(3)44×(2 18- 102÷ 17)

(4)(303+ 150× 15)÷69

1. A certain unit of the People's Liberation Army has to March 502 kilometers every day and start hiking for 60 kilometers. After walking for three days, the remaining distance is 20.5 kilometers per day. How many days will it take to finish it?

The rice in bag a weighs 68kg. After pouring 15kg from bag A into bag B, bag A is 5kg heavier than bag B ... How many kilograms of raw rice is there in bag B?

A steel mill produces 830 tons of steel every day for the first 3 days and 850 tons every day for the next 5 days. How many tons of steel is produced on average every day?

The motorcyclist traveled 60 kilometers at the speed of 20 kilometers per hour, and came back 30 kilometers per hour. What is the average speed of going back and forth?

5. Workers in the first workshop of a machine tool factory use 18 lathe to produce 720 machine parts in two hours. How many machine parts do 20 such lathes produce in three hours?

6. You can make120kg tofu with 30kg soybeans. According to this calculation, how many kilograms of soybeans do you need to make 600 kilograms of tofu?

An express train and an ordinary bus leave from two cities at the same time. The speed of express train is 90 kilometers per hour, and that of ordinary bus is 48 kilometers per hour. Two and a half hours later, two trains met on the road. How many kilometers is the railway between city A and city B?

8. The distance between the two places is 28 kilometers, and two cars, A and B, drive in the same direction from both places at the same time. A car travels 25 kilometers per hour, and B car travels 32 kilometers per hour. Car A is in the front and car B is in the back. How many hours will car B catch up with car A?

9. Cut a rectangular piece of paper with a length of 90 cm and a width of 20 cm into several square pieces of paper with the same size. It is required that the side length of a square is the largest, so as not to waste paper. How many squares can you cut?

10. In order to green the highway, the Bureau of Landscape Architecture planted a tree every 4 meters on both sides of a section of highway, and planted 74 trees at a time. Now it plans to plant a tree every 6 meters. So, how many trees will not be transplanted?

1 1, Party A has 14.8 yuan and Party B has 15.2 yuan. They want to buy a football together. The price of a football is twice their money. How much is a football? How much are they short of?

12. A machine plows 15 hectares in 3 hours. According to this calculation, how many hours does it take for five machines to plow 75 hectares?

13. There are 14 boxes of duck eggs in the store. Sold 250 kilograms, leaving 4 boxes of 20 kilograms. How many kilograms are there in each box of duck eggs?

14. bright primary school donated books to mountain students, with 240 books in grade four, twice as many as in grade five, and more books in grade six than in grade five 120. How many books did he donate per grade on average?

15. The grain store delivered 20 bags of rice and 20 bags of flour, each of which was 90kg of rice and 25kg of flour. How many kilograms more rice is brought in than flour? (Answer in two ways)

16. Two ropes * * * are 48.4m long. After cutting 6.4 meters from the first rope, the second rope is 6 meters more than the remaining two of the first rope. How long are the two ropes?

17. Students in Grade 4 and Grade 5 collect tree species, and the students in Grade 4 collect tree species 18.6 kg, and the students in Grade 4 collect 2.5 kg less than those in Grade 5. How many kilograms of tree species were collected in the second grade?

18. a workshop used to use 2450 kilowatts of electricity every month? At that time, after carrying out the saving activities, the electricity consumption of the original year can now be increased by two months. How many kilowatts does this workshop save electricity on average every month? What time?

19. The students took part in tree planting activities. 96 students in Grade 4 * * *, each of whom planted 3 trees. There are 87 people in the fifth grade, each of whom planted 4 trees. How many more trees were planted in the fifth grade than in the fourth grade?

20. Six students in the first group scored 86, 79, 98, 100, 89 and 94 respectively in the math test. What is their average score?

2 1. The car travels for 3 hours 135km, and the plane is 28 times faster than the car and flies 60km less. How many kilometers does this plane fly per hour?

A clothing factory produced 850 suits in five days. According to this calculation, how many suits are produced a month? (30 days a month)

23. The store delivered 8 baskets of apples, 12 baskets of pears, 38 kg of apples and 42 kg of pears in each basket. How many kilograms of fruit did this shop ship?

24. A construction site needs 240 tons of cement, which will be transported by five vehicles. Each car carries 3 tons at a time. How many times does it take to transport it? (There are two comprehensive solutions)

The distance between a and b is 750 kilometers. How many hours can a car drive at 50 kilometers per hour to get to B? (List the equations with unknowns and solve them again)

Obana Xiaolin has 12 pencils, and Xiaogang and Xiaohong have 20 pencils. How many pencils do they have on average?

27. In the third and fourth grades of a primary school, 620 trees should be watered. In the third grade, 40 trees should be watered every day for 8 days. The rest will be watered in the fourth grade. How many trees will be watered every day after five days?

28. Three looms weave 336 meters in four hours. According to this calculation, how many meters does 1 loom weave in eight hours?

29. The distance between Party A and Party B is 560 kilometers. One car travels from Party A to Party B at a speed of 48 kilometers per hour, and the other car travels from Party B to Party A at a speed of 32 kilometers per hour. What is the distance between the two cars after five hours?

-30. A section of highway was originally planned to be completed in 20 days. Actually, it was built 45 meters more than originally planned, and the task was completed five days ahead of schedule. How many meters was originally planned to be built every day?

Two ships, Party A and Party B, set sail from two ports 252km apart at the same time. Party A sailed at a speed of18km and Party B sailed at a speed of 24km. How many hours did the two ships meet? How many meters did Ship A walk when they met?

At the same time, the two trains depart from two stations 840 kilometers apart and meet after 7 hours. Do you know how many kilometers one train travels per hour and how many kilometers the other train travels per hour?

The school planted trees, and 84 trees were planted in the fourth grade, twice as many as in the third grade. The number of trees planted in the fifth grade is more than that planted in the third and fourth grades combined 18 trees. How many trees were planted in the fifth grade?

A and B are 720 kilometers apart, and two cars start from both places at the same time. Car A is driving at a speed of 50 kilometers per hour. After 6 hours, the distance between the two cars is still 60 kilometers. How many kilometers does bus B travel per hour?

The railway from Beijing to Tianjin is about 1000 meters long. A train leaves Beijing for Tianjin and returns to Beijing after a two-hour rest. It takes six hours. How many kilometers does this train run per hour on average?

The school bought 50 sets of desks and chairs, each with 78 yuan and each chair 15 yuan. How much did the school spend? How much is it more expensive to buy a table than a chair?

A flour mill can grind 62 kilograms of flour per hour. According to this calculation, how many kilograms of flour can five flour mills grind for six hours?

Xiaoming got 96 points, 100, 98 points and 100, 96 points in his five math exams. What is his average score?

Xiaoying bought two books at the price of 7.5 yuan and 9.8 yuan. She paid 20 yuan. How much should she get back?

This school donated books for Project Hope. 256 books were donated in the third grade, twice as many in the fourth grade as in the third grade, and 300 books were donated in the fifth grade than in the third and fourth grades. How many books did you donate in the fifth grade?

Four or five * * * planted 150 trees, and the fifth grade was twice that of the fourth grade, with 30 trees missing. How many trees were planted in the fourth and fifth grades?