Question

1.25乘8.8的简便算法,方法越多越好,至少两种!

Answer 1

1.25×8.8

=1.25×8×1.1

=10×1.1

=11

1.25×8.8

=1.25×（8+0.8）

=1.25×8+1.25×0.8

=10+1

=11