7.6×0.8+0.2×7.6
0.85×199
0.25×8.5×4
1.28×8.6+0.72×8.6
12.5×0.96×0.8
10.4-9.6×0.35
0.8×(4.3×1.25)
3.12+3.12×99
28.6×101-28.6
0.86×15.7-0.86×14.7
2.4×102
2.31×1.2×0.5
14-7.32-2.68
2.64+8.67+7.36+11.33
70÷28
(2.5-0.25)×0.4
9.16×1.5-0.5×9.16
3.6-3.6×0.5
4.5÷1.8 4.2÷3.5
930÷0.6÷5
63.4÷2.5÷0.4
4.9÷1.4 3.9÷(1.3×5)
(7.7+1.54)÷0.7 2.5×2.4
2.7÷45
15÷(0.15×0.4)
0.35×1.25×2×0.8
32.4×0.9+0.1×32.4
15÷0.25
46×57+23×86
13.7×0.25-3.7÷4
2.22×9.9+6.66×6.7
你要的是几年级的?