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