Multiplication:
5.6×2.9
3.77× 1.8
0.02×96
5.22×0.3
9.99×0.02
4.67×0.9
5×2.44
1.666×6. 1
9.432×0.002
5.6×6.5
4.88×2.9
5.6 1×4.3
8.9×2.4
5.5×55
9.77×0.02
1.384×5. 1
8.78×83
2.6×6 1
0.059×0.2
4.268× 1.7
57×5.7
9.46×2.85
17.8×6.4
1.5×4.9
2.5×0.88
5.555×5.2
2.22×3.33
7.658×85
36.02×0.3
56.78×8
Department:
85.44÷ 16
42.84÷7
10 1.7÷9
67.5÷ 15
230.4÷6
2 1.24÷36
0.736÷23
43.5÷ 12
35.2 1÷7
39.6÷24
6.2 1÷0.03
2 10÷ 1.4
5 1.3÷0.27
9 1.2÷3.8
0.756÷0. 18
0.66÷0.3
1 1.97÷ 1.5
69.6÷2.9
38.4÷0.8
15÷0.06
(Circulate decimals in a simple way, except for 2 decimal places):
8.2÷0. 12
0.8÷0.9
76.4÷5.4
4.7÷3
1.25÷ 1.2
32÷42
14.36÷2.7
8.33÷6.2
1.7÷0.03
2.4 1÷0.7
Use vertical calculation
0.396÷ 1.2= 0.756÷0.36= 15.6× 13=
0. 18× 15= 0.025× 14= 3.06×36=
0.04× 0.12 = 3.84× 2.6 ≈ 5.76× 3 = (one decimal place is reserved).
7. 15×22 90.75÷3.3 3.68×0.25
16.9÷0. 13 1.55÷3.9 3.7×0.0 16
13.76×0.8= 5.2×0.6 8.4× 1.3
6.4×0.5 4.48×0.4 5.25×5
35.4×4.2 0.042×0.54 0.76×0.32
0.25×0.046 2.52×3.4 1.08×25
0.12× 0.5× 0.16 = 4.8× 0.25 = 0.125×1.4 ≈ (keep two decimal places).
2.5÷0.7= (keep three decimal places) 10. 1÷3.3= (business cycle decimal)
10.75÷ 12.5= (check by multiplication) 3.25×9.04= (check by division)
3. Off-die calculation (can be simplified as simplified)
2.5×7. 1×4 16. 12×99+ 16. 12 5.2×0.9+0.9
7.28×99+7.28 4.3×50×0.2 64-2.64×0.5
26× 15.7+ 15.7×24 (2.275 +0.625)×0.28
3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8
8.9× 1. 1×4.7 2.7×5.4×3.9 3.6×9.85-5.46
8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+ 1.58
32+4.9-0.9 4.8-4.8×0.5 ( 1.25-0. 125)×8
4.8× 100. 1 56.5×99+56.5 7.09× 10.8-0.8×7.09
4.85 + 0.35 ÷ 1.4
8.7 × 17.4 - 8.7 × 7.4
12.5×0.4×2.5×8 0.87×3. 16+4.64 9.5× 10 1
0.68 ÷(5.2 -3.5)× 1.25
40.5 ÷ 0.8 1 × 0. 18 4.8 ×( 15 ÷ 2.4)
6.8 1+6.8 1×99 0.25× 185×40 4.4×0.8-3.4×0.8
(9.37+9.37+9.37+9.37)× 2.5
2.37×6.3+2.37×3.7 2.5× 1.25×0.32 3.8× 10. 1
2.5×(3.8×0.04) 7.69× 10 1 3.8× 10. 1
0.25×39+0.25 0. 125×72 46×0.33+54×0.33
(8×5.27) × 1.25 6.8 1+6.8 1×99 0.25× 185×40
6.8×0.75÷0.5 3.75÷0. 125–2.75 1.53+23.4÷7.2
9.5×99 13.5×0.98 12.5×8.8
1. An oil press squeezes 0.45 tons per hour. How many tons are squeezed by four such oil presses in 3.5 hours?
2. Nana Ogawa Obana walked from B to A and C at the same time. Xiaohua walks 3.2 kilometers per hour and Nana Ogawa walks 2.6 kilometers per hour. How far apart are they after four hours' walk? (Answer in two ways)
3. A batch of coal is planned to burn 0.6 tons per day, which can burn for 70 days. Due to the improvement of coal-burning technology, only 0.56 tons of coal is actually burned every day. How many days can it actually burn?
A mill grinds 2.6 tons of flour in 4 hours. According to this calculation, how many tons of flour can be ground in 7.5 hours? (Keep the whole ton)
1. The grain store sent 30 bags of rice and 40 bags of flour, one * * * is 2500 Jin, and each bag of rice is 50 Jin. How many kilograms is each bag of flour?
The plane flies 860 kilometers per hour, 20 kilometers more than the train. How many kilometers does this train run per hour?
3. Two cars, A and B, left from two places 480 kilometers apart at the same time and met after 3.2 hours. It is known that car B travels 72 kilometers per hour, and how many kilometers does car A travel per hour?
Two ships, A and B, sail from Shanghai to Wuhan at the same time. Spaceship A travels at a speed of 24 kilometers per hour, 8. In 5 hours, Ship A overtook Ship B by 5 1 km. What's the speed of the B ship?
There are 126 cypresses and poplars in the school, and the number of cypresses is six times that of poplars. How many cypresses and poplars are there?
6. The price of air conditioner is three times that of TV set. The school bought an air conditioner and four televisions, which cost 8400 yuan. How much is an air conditioner and a TV set?
7.8 baskets of apples weigh 40 kilograms more than 8 baskets of pears. As we all know, a basket of pears weighs 20 kilograms. How much does a basket of apples weigh?
8. To build a road with a length of 1960m, it is necessary to build 80m a day first. Eight days later, in order to complete the project as soon as possible, it is planned to build 120m in one day. How many days will it take to finish it?
9. Dad is 36 years older than Xiao Fang this year. It is understood that Dad is four years older than Xiao Fang this year. How old are Dad and Xiao Fang this year?
10.A and B two cars leave relatively from two places 420 kilometers apart at the same time. The speed of a car is 1. It's five times that of B car, and we met after 2 hours. Four hours. How many kilometers do cars A and B travel per hour?
Fifth grade application exercises (2)
Choose the appropriate method to solve the following application problems.
1. A cow weighs 850 kilograms, and an elephant weighs more than five times that of this cow, which is 500 kilograms. How much does this elephant weigh?
2. The number of students in Guangxin Primary School is less than that in Hongyang Middle School 1260. It is known that the number of students in Hongyang Middle School is 2. It is five times that of Guangxin Primary School. How many people are there in Hongyang Middle School and Guangxin Primary School?
Xiaolan and Xiao Fang walked in opposite directions from one point on the circular runway at the same time. Xiaolan walks 65 meters per minute, and Xiao Fang walks 75 meters per minute. After 2. Five minutes later, they met. What is the total length of this circular runway?
4. On Arbor Day, students planted 12 rows of poplars, 8 rows of Chinese fir trees, 300 trees in a row, each row 15 trees. How many poplars are there in each row?
The circumference of a rectangle is 64 cm, and the known length is three times the width. What is the length and width of this rectangle?
6. A triangular land with an area of 60m2 and a known base of15m. How high is it?
7. The garment factory wants to produce 6,500 suits, which has been produced for 15 days, with an average of 200 suits per day. The remaining 50 sets will be produced every day. How many days will it take to complete?
8. Two cars, A and B, leave from two places 665 kilometers apart at the same time. The average speed of a car is 82 kilometers per hour, and the average speed of b car is 82 kilometers per hour.
The hourly journey is 73 kilometers, and the difference between the two cars is still 45 kilometers after a few hours.
9. Young Pioneers went to the orchard to pick apples, and picked 14 baskets in the morning, each weighing 25kg; I picked 18 baskets in the afternoon. On this day, I picked 890 kilograms. How many kilos are there in each basket of apples picked in the afternoon?
10. A pen and a ballpoint pen * * * is 8. 3 yuan, the price of a pen is more than twice that of a ballpoint pen. 0.8 yuan. How much is a pen and a ballpoint pen?