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)