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7.2÷0.25÷0.4脱式计算,能简算的要简算

7.2/0.25/0.4 =7.2/(0.25x0.4) =7.2/0.1 =72 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

(1)21÷0.25÷0.4=21÷(0.25×0.4)=21÷0.1=210; (2)3.5×0.7+5.5×0.7+0.7=(3.5+5.5+1)×0.7=10×0.7=7;(3)0.125×3.2×0.25 =(0.125×8)×(0.4×0.25)=1×0.1=0.1; (4)1.25×3.2×0.8=1.25×0.8×3.2=1×3.2=3.2.

=9÷(0.25×0.4) =9÷0.1 =9×10 =90

78÷0.25÷0.4 =78÷(0.25x0.4) =78÷0.1 =780

0.175÷0.25÷0.4 =0.175÷(0.25x0.4) =0.175÷(0.1) =1.75

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。

原式=0.175×4÷1/4 =0.7×4 =2.8

0.25×4÷25×4 =1÷25×4 =4÷25 =25分之4

0.175÷0.25+0.4÷1.2 =7/10+1/3 =31/30

脱式计算能简算的要简算 0.25x32x12.5 =(0.25×4)×(8×12.5) =1×100 =100 2/5x68+0.4x32 =0.4×(68+32) =0.4×100 =40 14/5÷(14/5+7/10) =14/5÷7/2 =4/5 (2/3+4/15x5/6)÷10/21 =(2/3+2/9)÷10/21 =8/9÷10/21 =28/15 1-5/8÷25/28-3/10 =1-...

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