Question

73.6×0.83+1.7×7.36怎么简便运算？

Answer 1

73.6×0.83+1.7×7.36

先把 7.36 x1.7 换成 73.6 x0.17

=73.6×0.83+7.36x0.17

再根据 axb + axc = ax(b+c)

=73.6×(0.83+0.17)

=73.6x1

=73.6

Answer 2

把73.6换成7.36x10，这样原式=7.36x10x0.83+1.7x7.36=7.36x（8.3+1.7）=7.36x10=73.6；也可以把7.36换成73.6x0.1，这样原式=73.6x（0.83+0.17）=73.6x1=73.6。

Answer 3

73.6×0.83+1.7×7.36
=73.6×0.83+1.7×7.36×10÷10=73.6×0.83+0.17×73.6
=73.6×（0.83+0.17）
=73.6×1=73.6

Answer 4

73.6*0.83+1.7*7.36=7.36*10*0.83+1.7*7.36=7.36*8.3+1.7*7.36=7.36*（8.3+1.7）=7.36*10=73.6

Answer 5

73.6×0.83+1.7×7.36
=73.6×0.83+0.17×73.6
=73.6×（0.83+0.17）
=73.6×1
=73.6