Question

用简便方法计算（一定要用简便方法!） 2.5＋36 3.2×12.5×0.25

Answer 1

2.5＋36

=38.5

3.2×12.5×0.25

=4×0.8×12.5×0.25

=4×0.25×0.8×12.5

=1×10

=10