Question

1.25×8.6+7.6乘0.86的简便综合方式

1.25×8.6+7.6乘0.86的简便综合方式

Answer 1

1.25×8.6+7.6乘0.86
=12.5×0.86+7.6×0.86
=（12.5+7.6）×0.86
=20.1×0.86
=20×0.86+0.1×0.86
=17.2+0.086
=17.286

Answer 2

1.25×8.6+7.6×0.86

=1.25×8.6+0.76×8.6
=(1.25+0.76)×8.6
=(2+0.01)×8.6
=2×8.6+0.01×8.6
=17.2+0.086
=17.286