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7.2÷0.25÷0.4脱式计算,能简算的要简算

=4.1÷(0.25×0.4) =4.1÷0.1 =41 望采纳,点击采纳

2.8×4+7.2÷0.25 =2.8×4+7.2×4 =(2.8+7.2)×4 =10×4 =40

(1)0.25×[(2.8+4.4)÷1.2],=0.25×[7.2÷1.2],=0.25×6,=1.5;(2)3.7×9.16+6.3×9.16,=(3.7+6.3)×9.16,=10×9.16,=91.6;(3)[32-(1.95-1.95)]÷1.6,=[32-0]÷1.6,=32÷1.6,=20;(4)5.7×10.1,=5.7×(10+0.1),=5.7×10+5.7×0.1,...

1.25÷0.25×0.4 =(1.25×4)÷(0.25×4)×0.4——被除数和除数同时乘以4,商不变 =5÷1×0.4——除数变成1 =5×0.4 =2

0.3×0.25-0.2÷4 =(0.3-0.2)×0.25 =0.1×0.25 =0.025 9×5.4÷0.9 =9÷0.9×5.4 =10×5.4 =54 你好,本题以解答,如果满意,请点右上角“采纳答案”,支持一下。

这么简单你都不会啊,还上学干嘛?

(1)9.4÷[(1.2+1.3)÷0.25]=9.4÷[2.5÷0.25]=9.4÷10=0.94(2)(1.2+1.8×4)×(7-6.75=(1.2+7.2)×0.25=8.4×0.25=2.1(3)2.65×1.7+13.5×0.17=2.65×1.7+1.35×1.7=(2.65+1.35)×1.7=4×1.7=6.8(4)20.4-0.8×0.4-0.68=20.4-0.32-0.68=20.4-(0....

(0.125×8-0.5)×4 =(1-0.5)*4=0.5*4=2 105×8.6-8.6×4-8.6=(105-4-1)*8.6=100*8.6=860 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.65 (0.62+7.638÷0.1)÷0.25=(0.62+76.38)/0.25=77/0.25=308

(1)4.2÷0.25 =4.2x4÷(0.25x4) =16.8÷1 =16.8 (2)1.46+(7.7+0.54)+2.3 =(1.46+0.54)+(7.7+2.3) =2+10 =12 (3)(4.77+1.3)×(7-4.8÷8) =6.07x(7-0.6) =6.07x6.4 =6x6.4+0.07x6.4 =38.4+0.448 =38.848 (4)0.7÷【(0.7+0.7)×0.7-...

(20+8.5)÷15 =28.5÷15 =1.9 (2.3÷0.46-4.5)÷0.25 =(5-4.5)÷0.25 =0.5÷0.25 =2 2.65×1.7+1.35×1.7 =1.7×(2.65+1.35) =1.7×4 =6.8 4.8×0.9+0.48 =4.8×0.9+4.8×0.1 =4.8×(0.9+0.1) =4.8×1 =4.8

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