Practice of decimal multiplication and division in Grade Four 100

Practice of decimal multiplication and division in Grade Four 100

0.2*5,0.5*0.2,2.5*0.5

Fourth grade volume I written calculation
The more, the better!

1.87+63-21
2.54-45+65
3.24-21+54
4.98-95+54
5.54+88-87
6.54+52-84
7.20+84-87
8.21+77-45
9.54+82-12
10.62+59-45
11.51-54+51
12.87-78+99
13.24+54-51
14.54+84-215
15.87-51+55
16.87-72+91
17.85-58+46
18.62+12-85
19.25+58-54
20.61-54+81
21.52-21+15
22.54-21+78
23.81+62-58
24.56+84+84
25.49+89-11
26.96-27+15
27.95-25+48
28.94-84+86
29.65-45+25
30.54-96+85
31.88+21-37
32.69+97-27
33.14+48-58
34.25+95-46
35.36+62-57
36.53+31-39
37.43+94-48
38.76+25-28
39.89+60-16
40.94+84-38
41.65+50-19
42.52+35-27
43.11+15-28
44.24+64-26
45.47+31-25
46.58+97-34
47.84+46-25
48.95+95-20
49.61+75-13
50.12+65-12
51.73+45-32
52.86+25-21
53.99+85-12
54.38+16-54
55.15+34-54
56.24+94-28
57.81+76-58
58.42+31-49
59.53+98-26
60.26+84-35
61.39+45-19
62.68+11-28
63.85+94-24
64.44+34-28
65.31+32-38
66.82+65-37
67.13+54-39
68.26+97-24
69.99+55-25
70.37+82-20
71.15+46-32
72.98+72-21
73.56+92-65
74.75+81-54
75.81+69-12
76.48+87-32
77.54+54-62
78.38+32-12
79.66+21-52
80.54+65-20
88.15+54-13
82.21+98-52
83.42+87-42
84.95+54-14
85.84+21-65
86.58+65-35
87.69+21-25
88.36+54-12
89.11+24-65
90.42+98-32
91.74+65-45
92.85+32-25
93.58+85-16
94.27+54-25
95.65+21-34
96.91+65-21
97.53+95-54
98.78+87-32
99.54+24-87
100.82+54-12
Pen 640 △ 80=
15×5=
23×3=
12×2×5=
480÷80=
16×5=
27×3=
90÷15=
48÷4=
640÷16=
39÷3=
24×20=
32×3=
48÷16=
12×8=
27×3=
56÷14=
24÷8=
14×2=
83－45=
560÷80=
96÷24=
40÷20=
40×30=
37＋26=
76－39=
605＋59=
30×23=
12×8=
27＋32=
48＋27=
4500×20=
73＋15 =
120×600 =
200×360=
6800×400=
280＋270=
4×2500=
6000÷40=
5×1280=
310－70=
400×14=
470＋180=
1000÷25=
160×600=
20×420=
290×300=
8100÷300=
7600÷200=
7600÷400=
680＋270=
980÷14=
4200÷30=
6×1300=
1300×50=
200×48=
930－660=
530＋280=
9200÷400=
840÷21=
180×500=
8000÷500 =
1900÷20=
200×160=
8700÷300=
300×330=
3×1400=
7000÷14=
600÷12=
9600÷80=
140×300=
8800÷40=
9600÷800=
750－290=
5×490=
760×20=
7500÷500=
370×200=
650÷13=
8600－4200=
240×4=
640÷80=
15×10=
12×11=
160×30=
220×40=
104×5=
4500÷50=
120×2=
90÷30=
270÷30=
270×30=
84÷21=
76÷9=
66÷7=
100－54=
123＋15=
360÷4=
55÷5=
32×6= 7000÷70＝
200÷40＝
180÷30=
240÷40=
35×2=
140×7=
13×6=
280×3=
350×2=
50×11=
250×6=
7200+900=
410-201=
125×8=
48×20=
6600÷600=
390+140=
11×80=
24×50=
3600÷400= 4000÷50=
530－70=
420－90=
9600÷30=
7×700=
203+98=
1800÷300=
240+570=
4800÷400=
370+580=
580－490=
910－370=
25×8=
270－190=
36×2=
75÷25=
330÷11=
6×800=
5400÷9=
420÷60= 9×800=
3×330=
300×7=
9×500=
390÷13=
6300÷700=
5600÷700=
4800÷12=
3500÷7=
370＋560=
520＋490＝
450－90＝
80＋330＝
70×700＝
7000÷70＝
4000÷80＝
2400÷200＝
420－90＝
170＋320＝
1000－51＝ 520－260＝
910－190＝
35×200＝
22×200＝
8800÷400＝
9300÷300＝
6×300＝
1800÷200＝
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Fifth grade volume I written mathematics problems 100, fast variety

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
5.61×4.3
8.9×2.4
5.5×55
9.77×0.02
1.384×5.1
8.78×83
2.6×61
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
Division:
85.44÷16
42.84÷7
101.7÷9
67.5÷15
230.4÷6
21.24÷36
0.736÷23
43.5÷12
35.21÷7
39.6÷24
6.21÷0.03
210÷1.4
51.3÷0.27
91.2÷3.8
0.756÷0.18
0.66÷0.3
11.97÷1.5
69.6÷2.9
38.4÷0.8
15÷0.06
(a simple method is used to cycle decimals, except that 2 decimals may not be retained.)
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
2.41÷0.7
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 reserved)
7.15×22 90.75÷3.3 3.68×0.25
16.9÷0.13 1.55÷3.9 3.7×0.016
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 ≈ (two decimal places reserved)
2.5 △ 0.7 = (three decimal places reserved) 10.1 △ 3.3 = (commercial circulation decimal)
5 = (check by multiplication) 3.25 × 9.04 = (check by Division)
3. Off form calculation
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 9.5×101
0.68 ÷（5.2 -3.5）× 1.25
40.5 ÷ 0.81 × 0.18 4.8 ×（15 ÷ 2.4）
6.81+6.81×99 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) 7.69×101 3.8×10.1
0.25×39+0.25 0.125×72 46×0.33+54×0.33
(8×5.27) ×1.25 6.81+6.81×99 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. One oil press can produce 0.45 tons of oil per hour. How many tons of oil can four such oil presses produce in 3.5 hours?
2. Xiaohua and Xiaochuan walk from place B to a and C at the same time. Xiaohua walks 3.2km per hour, while Xiaochuan walks 2.6km per hour. How far is the distance between them after walking for 4 hours? (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 per day, how many days can it actually burn?
4. A mill grinds 2.6 tons of flour in 4 hours. How many tons of flour can be grinded in 7.5 hours
1. The grain store delivered 30 bags of rice and 40 bags of flour, a total of 2500 kg. Each bag of rice is 50 kg. How many kg is each bag of flour?
2. An airplane flies 860 kilometers per hour, which is 20 kilometers more than that of a train six times per hour. How many kilometers does this train travel per hour?
3. Party A and Party B drive from two places 480 kilometers apart at the same time. After 3.2 hours, the two vehicles meet. It is known that Party B travels 72 kilometers per hour and Party A how many kilometers per hour
4. Two ships a and B are sailing from Shanghai to Wuhan at the same time. Ship a travels 24 kilometers per hour. After 8.5 hours, ship a exceeds ship B by 51 kilometers. How many kilometers per hour does ship B travel?
5. There are 126 cypresses and poplars in the school. The number of cypresses is six times that of poplars. How many cypresses and poplars are there?
6. The price of an air conditioner is three times that of a TV set. The school bought an air conditioner and four TV sets for a total of 8400 yuan. How much is an air conditioner and a TV set?
7.8 baskets of apples weigh 40 kg more than 8 baskets of pears. It is known that a basket of pears weighs 20 kg. How many kg does a basket of apples weigh?
8. To build a road with a length of 1960 meters, the first step is to build 80 meters a day. After eight days, in order to finish it as soon as possible, the next step is to build 120 meters a day. How many days will it take to finish it?
9. My father is 36 years older than Xiaofang this year. It is known that my father is four times older than Xiaofang this year. How old are my father and Xiaofang this year?
10. Car a and car B leave from the two places 420 kilometers apart at the same time. The speed of car a is 1.5 times that of car B. after 2.4 hours, they meet. How many kilometers do car a and car B walk each hour?
Fifth grade practical exercises (2)
Choose the appropriate method to solve the following application questions
1. A cow weighs 850 kg, and an elephant weighs 500 kg more than five times that of the cow. How many kg does the elephant weigh?
2. The number of people in Xinguang primary school is 1260 less than that in Hongyang middle school. It is known that the number of people in Hongyang middle school is 2.5 times that in Xinguang primary school. How many people are there in Hongyang middle school and Xinguang primary school?
3. Xiaolan and Xiaofang walk in the opposite direction from a point on the circular runway at the same time. Xiaolan walks 65 meters per minute and Xiaofang 75 meters per minute. After 2.5 minutes, they meet. How many meters is the total length of the circular runway?
4. On tree planting day, the students planted 12 rows of poplar and 8 rows of Chinese fir, a total of 300 trees. There are 15 Chinese fir trees in each row. How many poplar trees in each row?
5. The circumference of a rectangle is 64cm. The known length is three times the width. How many cm are the length and width of the rectangle?
6. A triangular piece of land, its area is 60 square meters, the known bottom is 15 meters. How many meters is the height?
7. The garment factory has been producing 6500 suits for 15 days, with an average of 200 suits per day. The remaining 50 suits per day. How many days will it take to complete them?
8. The two vehicles of Party A and Party B start from the two places 665km apart at the same time. The average travel distance of vehicle a is 82km per hour, and that of vehicle B is 82km per hour
73 kilometers per hour. How many hours is the distance between the two cars 45 kilometers?
9. The young pioneers went to the orchard to pick apples. In the morning, they picked 14 baskets, each of which contained 25 kg. In the afternoon, they picked 18 baskets, a total of 890 kg. How many kg of apples were picked in the afternoon?
10. A pen and a ball point pen are 8.3 yuan in total. The price of a pen is 0.8 yuan more than twice that of a ball point pen. How much are a pen and a ball point pen?
1. A piece of land, including 1 / 5 kinds of corn, 1 / 6 kinds of vegetables, and the rest kinds of watermelons?
2. There are 24 boys and 20 girls in a class. How many times is the number of boys? How many times is the number of girls?
3. A 40 cm long and 30 cm wide rectangular iron plate. Cut off the four corners of it, and then weld it into a box without cover. How many liters is its volume?
4. A car runs 192 km in the first three hours and 58 km in the second two hours. What is the average speed of the car?
5. A piece of land, including 1 / 5 kinds of corn, 1 / 6 kinds of vegetables, and the rest kinds of watermelons?
6. There are 24 boys and 20 girls in a class