3.7 square decimeter =(37000) square millimeter 5.80 yuan =(5) yuan (8) angle

(15) decimeter = 1.5m (4) tons (80) kilograms =4.08 tons.

5 10m =(0.5 1)km 5m 16cm =(5. 16)m。

5 kg 700 g =( 5.7) kg 0.95 m =(95) cm

4700 m =(4.7) km 3650 g =(3.65) kg

40.06 tons =(40060) kg 1.4 square meters =( 140) square decimeter.

360 square meters =( 0.036) hectares 7.05 meters = (7) meters (5) centimeters.

5.45 kg = (5) kg (450) g

3 km 50 m = (3.05) km (0.5) hour = 30 minutes.

3 kg 500 g = (3.5) kg (2.75) hours = 2: 45 hours.

2.78 tons = (2) tons (780) kg

0.25 hours = (15) minutes

504 cm = (5.04) m

4.2m = 4m (20cm)

10.7m = (10.7) m.

0.06 km2 = (6) hectares

9 kg 750 g = (9.75) kg

8.04 tons = 8 tons 40 kg

6.24 square meters = (624) square decimeter

0.05 km =(50) m

1250 cm2 =(0. 125) m2.

100 ml =(0. 1) liter.

1 ton 70kg = (1.07) ton.

102 km2 = (10200000) m2.

2.68L =(2) L (680ml)

1200m =( 1.2) km

4040 kg =( 4.04) tons

240.3 square centimeters =( 2.403) square decimeter

5m 8m = (5.8m)

4.2 m2 = (4) m2 (20) m2.

Calculation ability test in the second volume of grade four (1)

Name:

Calculate the following problems with recursive equations, and simplify what can be simplified.

45+240÷ 12 124+78+22 100-35-25

( 140-70)×54 63+84×2÷42 490÷7+24×5

26×6- 1 10 345+99 (46-20)×30-90

25×27×4 15×7+85×7 (40-4)×25

125×64 2400÷80- 14×2 108-(83+360÷60)

(420+48)÷(375-345) 290-(34×3+99)

142-54÷9+ 14 240÷ 16 75×4×25

407-99 16×76-76×6 99×53+53

720÷36÷2 103×35 450-2×( 16+9)

245-(45+39) 28×25 473+59+27+ 1

98×99 125×(8×4)×5 4 1×25-25

88× 125 420÷(205- 198)×4 540÷2÷54

460÷(29- 18÷3) 720÷36 (960-400)÷70

1. The farm tool factory wanted to produce 20,640 small farm tools, and 120 was half finished. How many pieces are produced on average every day?

A shoe factory produced 3860 pairs of men's shoes, twice as many as women's shoes. How many pairs of women's shoes were produced?

3. To build the canal, 840m has been built, and120m has not been built. How many times have you repaired it?

4.38 militiamen practiced shooting, and one hit the ring of 1026. How many times did each militia fight on average?

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

6. In the feeding group, 64 white rabbits were raised, which was four times that of gray rabbits. How many gray rabbits have you raised?

7. The speed of going up the mountain is 36 kilometers per hour. It takes 5 hours to reach the top of the mountain, and only 4 hours to go back the same way when going down the mountain. How many kilometers per hour does the car average when it goes downhill?

8. The experimental primary school should buy a 12 yuan composition counseling book 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?

9. Bouquet 30 yuan, buy five and get one free. Aunt Wang buys five bundles at a time. How much cheaper is each bundle?

10. each 12kg coal can generate 24kW? How many kilowatts can a factory generate if it saves 1440 kg of coal every day? What time?

1 1. 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?

12. The road between A and B is 270 kilometers long. How many hours does it take for a car to complete the journey at a speed of 45 kilometers per hour?

13. On one side of the sports ground, put a red flag every 5 meters. 13 faces are inserted from one end to the other. How long is one side of the playground? (5 points)

14. The store delivered 43 baskets in the morning and 28 baskets in the afternoon, with an average of 52kg per basket. How many kilograms of oranges did this shop deliver?

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

16. The school plans to buy 25 computer desks and 25 swivel chairs. 750 yuan for each computer desk and 250 yuan for each swivel chair. The school has prepared 24,000 yuan. Is it enough?

17. An elephant weighs about 5408 kilograms, which is 208 times that of a monkey. How much does this monkey weigh? (Answer in two ways)

18. The school shipped 1200 seedlings. If we plant 24 trees per row, how many rows can we plant? (Answer in two ways)

19, 523 teachers and students of the whole school participated in tree planting. If 70 people are divided into a group, how many groups can they be divided into at most?

20. Enter a 466-word article by computer. Red can input 60 words per minute, and Congcong can finish it in 7 minutes. Who gets in faster?

2 1. Uncle Wang's orchard harvested 358 Jin of apples, 270 Jin of pears and 0/96 Jin of plums. Apples are 40kg per box, pears are 30kg per box and plums are 20kg per box. Let's calculate: How many cartons do you need for each of these fruits?

22. Plant trees along the road with a length of 180m, and plant a tree every 20m. How many trees do I need to plant?

23. Is it enough for eight of us to buy tickets with 260 yuan money? How many methods can you work out? )

24. The car runs at 18m per second, with a length of 18m and a tunnel length of 324m. How long does it take for this car to pass through the tunnel?

25. Chunguang Grain and Oil Company wants to export 680 tons of grain. How much do you need if you use a 22-ton container? How many 17 ton containers do you need?

26. The expressway from Shijiazhuang to Chengde is 546 kilometers long. The Honghong family drove from Shijiazhuang to Chengde to visit the summer resort. If they drive an average of 78 kilometers per hour and leave at 8 am, when will they arrive?

27. A rectangular vegetable field is 9 meters long and 6 meters wide. This vegetable field receives 972 kilograms of vegetables. How many Jin of vegetables do you collect per square meter on average?

Shanghai Oriental Pearl TV Tower is the tallest TV tower in Asia, with a height of 468 meters. The first floor 12 floor is 39 meters high. The height of the TV tower is equivalent to the height of several 12-story residential buildings.

29. Grandpa Wang's four cows produce 896 kilograms of milk every week. How much milk does an average cow produce every day/kloc-0?

30. Four vehicles transported 960 bags of cement three times. How many bags of cement does each car transport at a time?

3 1, (1) There are three windows in each classroom of Shui Bo Primary School, and each window is equipped with 12 pieces of glass. How many pieces of glass have been installed in nine classrooms?

(2) Liu Yang Primary School has 12 classrooms, each classroom has 3 windows, and each classroom is equipped with 324 pieces of glass. How many pieces of glass are installed in each window on average?

32. Xiaohong bought two boxes of mung bean cakes, one box 1 kg. There are 20 pieces in each box. How many grams does each piece weigh on average?

33. A bus started from Zhang Cun. If you drive at a speed of 60 kilometers per hour, it will take 4 hours to reach Lizhuang. It only took three hours to get there. How many kilometers does this car actually travel per hour on average?

34. Baita Village plans to build a canal. If16m is built every day,18m can be completed. I built 24 meters on the first day. According to the progress of the first day, how many days can it be completed?

35. Hong Guang Hotel bought 100 towels, each 6 yuan. How many towels can I buy if I buy a towel with this money of 8 yuan?

36, a pack of A4 copy paper, 25 sheets a day, will be used up in 20 days. How many days can I use less than five cards a day?

37. A professional beekeeper raised 24 boxes of bees this year. Last year, 5 boxes of bees brewed 375 kilograms of honey. According to last year's honey output, how many Jin of honey can be brewed this year?

38. Dongdongjia raised 135 trees on 15 square meters of land. According to this calculation, how much land is needed to raise 990 trees?

39. Hongshicun Primary School waters trees in six groups. There are four people in each group, and each group waters 360 trees. How many trees are watered per person on average?

There are three times as many eggs in the box as in the basket. There are 96 eggs in a box. How many eggs are there in six baskets?

4 1. The average speed of a train before speed increase is 7 1 km, and it takes 12 hours from Qinhuangdao to Handan. After speeding up, the average speed is 95 kilometers per hour. How many hours does it take from Qinhuangdao to Handan after speeding up?

42. Aunt Wang is an expert in making children's clothes. She can make 75 sets of children's clothes a week. Now the working week is five days. (1) According to this calculation, how many sets can 15 make?

(2) How many days does it take to make 120 sets of children's clothes?

43. The coach from Beijing to Qingdao passes through Tianjin and Jinan. It departs from Beijing at 6: 30 in the morning with an average speed of 85 kilometers per hour. When does it arrive in Qingdao?

137km； From Beijing to Tianjin; 360km from Tianjin to Jinan; Jinan to Qingdao is 393 kilometers.

44. Sunshine Primary School has 960 teachers and students. 60 tons were used in June. (1) How many tons of water does the school use on average every day?

(2) According to this calculation, how many people can use 1 ton of water for one day?

How about a month?

45. 125 male students and 1 19 female students were led by three teachers to visit the history museum. During the visit, they can only enter in batches, with a maximum of 50 people allowed at a time. How many batches at least?

46. A story book has 448 pages. Obviously, it took 16 days to read it. Fangfang reads 4 pages more than Mingming every day. How many pages does Fangfang read every day?

47. In order to carry out sports activities, the class pays for playing basketball and volleyball. It is known that it costs 16 1 yuan to buy three basketballs and two volleyballs. If you spend 245 yuan to buy three basketballs and five volleyballs, how much is a basketball? How much is a volleyball?

48. Mingming is a child who loves learning. He does some oral arithmetic problems every day except Sunday. If he does 300 words a week, according to this calculation,

(1) How many courses can I do in three weeks?

(2)650 questions can be completed in a few days?

49. A titmouse can eat about 800 pests in five days. According to this calculation, how many pests can a titmouse eat in a month? A month is 30 days. )

50. A bus travels for 3 hours 174 km. At this speed, how many kilometers can 12 hour travel?

5 1. Grandpa Zhang bought three lambs and spent 75 yuan. He wants to buy five more lambs. How much will it cost?

54, 5 boxes of bees can brew 375 kilograms of honey a year. Kobayashi keeps 12 boxes of such bees. How many Jin of honey can you brew a year?

55. The 180 Young Pioneers of Yu Ying Primary School helped their families to do good deeds on "Love Day". These young pioneers are divided into five teams on average, and each team is divided into four groups. How many young pioneers are there in each group on average?

56. 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?

57. Eggs collected at Chunya Chicken Farm on Monday were packed in a box of 18kg. After 8 cases are packed, there is 16kg left. How many kilograms of eggs were collected on Monday?

58. Uncle Wang drove from the county seat to Wangzhuang to deliver fertilizer. I walked 40 kilometers per hour for three hours when I went there, and only two hours when I came back. How many kilometers per hour did you average when you came back?

59. A long-distance bus traveled in the plains and mountains for two hours and finally reached the top of the mountain. It is known that tourist buses travel 50 kilometers per hour in plain areas and 30 kilometers per hour in mountainous areas. How long will this trip take?

60. The school should add two new books to the library, each with three sets. It is known that each set of children's encyclopedias 125 yuan, and each set of mathematical conjectures 18 yuan. * * * How much?

6 1. The school is going to distribute exercise books to class 15, with 44 copies for each class15, and 40 copies for standby. How many exercise books should schools buy?

62, a tree seedling 16 yuan, buy 3 trees to get 1 tree. How much cheaper is it to buy three at a time?

63. Shampoo per bottle 15 yuan. The mall will hold a promotion, and buy 2 bottles for free 1 bottle. Buy two bottles at a time. How much cheaper is each bottle?

64. The school has built a new flower bed with a length of 35 meters and a width of 15 meters. If you can plant 15 roses per square meter, how many roses can you plant in this flower bed?

65. An elephant in the park eats 350 kilograms of food a day. The breeder has prepared 5 tons of food, enough for the elephant to eat for 20 days?

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

67. Xiao Chen took the divisor 30 as 36 when calculating the division formula, and the calculated quotient was 5. What should be the correct result?

68. Plant 75 peach trees along the circular pond, and plant 2 pear trees between every two peach trees. How many pear trees can you plant?

69. There are two types of vans, one is 12 people, and the rent for each van is 120 yuan; The other is 18 people, and the rent per van is 160 yuan. There are 58 people in the tour group. What's the cheapest way to rent?

70. In order to celebrate New Year's Day, the pedestrian street is covered with lanterns. From one end of the street to the other, a red lantern is hung every 10 meter (both ends are hung). The pedestrian street is 600 meters long. If red lanterns are hung on both sides of the street, how many red lanterns will a * * hang?