1, Hongxing Primary School planned to mow 3,000 Jin in five days, actually mowing more than planned 150 Jin.

(1)3000÷5 means ()

(2) 3000 ÷ 5+ 150 means ()

(3) 3000 ÷ (3000 ÷ 5+ 150) means ()

(Extended reading: an example of the calculation method of mathematics application problems in grade five)

2. Fill in the appropriate number in ().

1.2×4+( )×3=9.3 ? ( )×2.4+ 15× 1.6=48

Second, the column calculation

What is the difference between the quotient of 1 and 82 and 0. 125 minus 0.78 divided by 0.26?

2,52.4 Subtract the sum of 22.7 and 7.2, and divide the difference by 4.5. What is the quotient?

3,5.7 plus the sum of the differences between 18 and 3.5, multiplied by 0.05, what is the product?

4. What is the sum of1.2 divided by the quotient of 4.2 and the product of 5 and 6.2?

(Extended reading: Summary of Math Application Problems in Grade Five of Primary School (with answers))

Third, the application problem.

1. The road team will build a road with a length of 180 km. It turned out that it was built 6 kilometers a day. /kloc-speed up after 0/5 days, and build 7.5 kilometers a day. How many days will it take to complete this road?

2. The construction site needs sand 106 tons, and car transportation 15 times, with 2.4 tons each time. The rest are transported by cart, 5 tons each time. How many times will it take to complete? (Draw and check)

Zhang Li bought four fables and four English humors, gave them 20 yuan and took them back to 7.6 yuan. Every fable 1.6 yuan. How much is each English humor?

There used to be 30 boats in People's Park, which could bring 540 yuan's income every day. Now there are more 15 boats than before. What's your daily income now?

5. The TV factory originally planned to produce 1680 color TV sets in 36 days, but half of them were completed in the first 16 days. The rest of the plan will be completed within 6 days. How many units are produced on average every day?

answer

fill (up) a vacancy

1, (1) How many Jin are you going to mow the grass every day?

(2) How many kilograms of grass is actually mowed every day?

(3) How many days did it actually take?

2、 1.5; 10

Second, the column calculation

1、0. 125×82-0.78÷0.26=7.25

2、[52.4-(22.7+7.2)]÷4.5=5

3、[5.7+( 18-3.5)]×0.05= 1.0 1

4、4.2÷ 1.2+5×6.2=3.45

Third, the application problem.

1, (180-6×15) ÷ 7.5 =12 (days)

2. (106-2.4×15) ÷ 5 =14 (times)

3. (20-7.6) ÷ 4-1.6 =1.5 (yuan)

4, 540 ÷ 30× (30+15) = 810 (yuan)

5, 1680 ÷ 2 ÷ 6 = 140 (Taiwan Province)

One-year application problem 1. There are 40 trees on both sides of a road. A * *, how many trees have been planted?

2. 16 butterflies fly away from the flowers, and five butterflies fly away. How many butterflies have flown away twice?

There are 25 planes in the airport, and 9 have flown away. How many planes are there at the airport now?

Xiaoping planted 7 pots of safflower and the same amount of yellow flowers. How many pots of two kinds of flowers?

Four students fold boats together, and each student folds five. How many stars did they break?

Xiao Qiang's family has 30 apples, and he ate 7. How many?

7. There are 43 cars in the passenger station, and 3 cars have already left. How many cars are there?

8. Children make paper-cuts with 8 pieces of red paper and the same amount of yellow paper. How many sheets of paper did they use?

9. There are 29 horses in the racecourse, and five more are coming. How many horses are there in the racecourse now?

10. There are 45 fans in the store, and 5 fans have been sold. How many fans are there now?

1 1. A bus, 35 people get off at Heping Road, and there are 20 people left on the bus. How many people are there on the bus?

12. How much does it cost for mom to buy a coat and trousers * * * to go to 79 yuan, and to buy a coat and trousers in 50 yuan?

13, Linlin has written 35 new words and 40 more. How many new words does he want to write?

? 14, Young Pioneers learn from Lei Feng, and Class One and Class Two do 39 good deeds, including 20 in Class One and how many in Class Two?

15. There are 30 swans by the lake. After flying away 20 swans, how many are left?

16. The store brought 24 boxes of soap and 10 boxes of soap. The number of boxes of towels is 3 boxes less than the sum of soap and soap. How many boxes of towels did you bring in?

17, obviously I have to do 30 math problems a day, and I have done 8. How many more questions do you have to do?

18, the school sports group has 18 skipping rope, and bought 22 more. How many are there now?

19, Lily bought a coat from 28 yuan and a skirt from 22 yuan. How much did these two clothes cost?

20. Mother bought a bag of rice, gave it to 50 yuan, a shop assistant, and brought it back to 8 yuan. How much is this bag of rice?

2 1, a section of iron wire has gone 20 meters, leaving 12 meters. How long is this piece of wire?

22. Wang Hong read a 45-page story book. He has read page 10. How many pages are left?

23. There are some birds in the tree. The first time, 12 birds flew away, and the second time, 8 birds flew away. How many birds did you fly away twice?

24. 40 white rabbits and 25 gray rabbits were raised in the feeding group. Twenty rabbits were sold, how many are left?

25. Class One made a 18 kite, and Class Two made a 10 kite. How many kites did Class One make more than Class Two?

There are 25 boys and 20 girls in Class One. How many girls are less than boys?

27. The kindergarten bought 40 red balloons and the same number of flower balloons. How many balloons did a * * * buy?

Xiao Liang picked 37 apples, while her sister picked 40. How many apples did they pick?

29. Xiaoming made 20 flowers and Xiaohong made 30. How many flowers did they make together? How many flowers does Xiaoming make less than Xiaohong?

30. Xiao Qiang finished reading an 88-page story book in two days. The first day, he read 30 pages. How many pages did he read the next day?

3 1. The students made 48 craft flowers and gave them to 30 kindergarten children. How many flowers are left?

32. There is a basket of apples. After eating 10, there are 37 apples left. How many apples are there in this basket?

Class 1 boys 18, girls 20. How many people are there in this class? How many boys are less than girls?

34. A bus, 17 passengers, 10 passengers get off at the station and get on with 8 people. How many people are there on the bus?

Lily's money goes from 20 yuan, where she bought stationery, to 8 yuan, and 20 yuan, which her mother gave her. How much money does she have now?

36. Xiao Qiang is 98 cm tall, and his younger brother is shorter than him 10 cm. How tall is his brother?

37. Xiao Jia read a story book. She read 17 pages first, and the rest were four pages more than she had read. How many pages are there in this book?

38. Xiaoming has 15 comic books and 20 story books. The number of sci-tech books is less than the total number of comic books and story books 18. How many science and technology books are there?

39. The outer ring road of a city is 72 kilometers long, and the middle line is 30 kilometers less than the outer ring road. How many kilometers is the central line?