Question

帮我出几道五年级简便运算题。

Answer 1

0.125×32×0.25

=0.125×8×4×0.25

=(0.125×8)×(4×0.25)

=1×1

=1

64.3×10.1

=64.3×(10+0.1)

=64.3×10+64.3×0.1

=643+6.43

=649.43