9.7*0.47+1.53*9.7-9.7(简便计算)

问题描述:

9.7*0.47+1.53*9.7-9.7(简便计算)

9.7×0.47+1.53×9.7-9.7
=9.7×(0.47+1.53-1)
=9.7×1
=9.7
利用乘法分配率,提出9.7

9.7*0.47+1.53*9.7-9.7
=9.7*0.47 + 9.7*1.53 - 9.7*1
=9.7*(0.47+1.53-1)
=9.7*(2-1)
=9.7*1
=9.7

(0.47+1.53)*9.7-9.7=9.7

9.7*(0.47+1.53-1)=9.7*1=9.7

=9.7×0.47 + 9.7×1.53 - 9.7×1
=9.7×(0.47+1.53-1)
=9.7

9.7

9.7*(0.47
+1.53-1)=9.7