作业帮0.32*12.5*2.5 4.25/2.5*9.9+0.17全部是简便运算还有7.6*27+7.6*174-7.69.9*34
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 18:25:29
0.32*12.5*2.5 4.25/2.5*9.9+0.17全部是简便运算还有7.6*27+7.6*174-7.69.9*34
0.32*12.5*2.5 4.25/2.5*9.9+0.17全部是简便运算
还有7.6*27+7.6*174-7.6
9.9*34
0.32*12.5*2.5 4.25/2.5*9.9+0.17全部是简便运算还有7.6*27+7.6*174-7.69.9*34
0.32*12.5*2.5=1/10000*(32*125*25)=1/10000*(8*125*4*25)
=1/10000*(1000*100)=10
4.25/2.5*9.9+0.17=1/100*(425/25*99)+17/100
=1/100[425/25*99+17]
=1/100(17*99+17)
=17/100*(99+1)
=17/100*100
=17
7.6*27+7.6*174-7.6=1/10*(76*27+76*174-76)
=76/10*(27+174-1)
=76/10*(27+173)
=76/10*200=76*20=1520
9.9*34=1/10*(99*34)=1/10*[(100-1)*34]
=1/10*[100*34-34]
=1/10*(3400-34)
=1/10*3366
=336.6
0.32*12.5*2.5
=0.8*0.4*12.5*2.5
=12.5*0.8*2.5*0.4
=10*1
10
4.25/2.5*9.9+0.17
=1/100*(425/25*99)+17/100
=1/100[425/25*99+17]
=1/100(17*99+17)
=17/100*(99+1)
=17...
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0.32*12.5*2.5
=0.8*0.4*12.5*2.5
=12.5*0.8*2.5*0.4
=10*1
10
4.25/2.5*9.9+0.17
=1/100*(425/25*99)+17/100
=1/100[425/25*99+17]
=1/100(17*99+17)
=17/100*(99+1)
=17/100*100
=17
7.6*27+7.6*174-7.6
=7.6*(27+174-1)
=7.6*200
=1520
9.9*34
=1/10*(99*34)
=1/10*[(100-1)*34]
=1/10*[100*34-34]
=1/10*(3400-34)
=1/10*3366
=336.6
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