用递等式计算（能简算的要简算）3.67×99+3.6721÷2.5÷0.44.64+3.7×293.7×0.32+93.7×0.680.125×32×0.254.5×10.1．

Question

用递等式计算（能简算的要简算）
3.67×99+3.67              21÷2.5÷0.4               4.64+3.7×2
93.7×0.32+93.7×0.68      0.125×32×0.25            4.5×10.1．

Answer 1

（1）3.67×99+3.67
=3.67×（99+1）
=3.67×100
=367

（2）21÷2.5÷0.4
=21÷（2.5×0.4）
=21÷1
=21

（3）4.64+3.7×2
=4.64+7.4
=12.04

（4）93.7×0.32+93.7×0.68
=93.7×（0.32+0.68）
=93.7×1
=93.7

（5）0.125×32×0.25
=（0.125×8）×（4×0.25）
=1×1
=1

（6）4.5×10.1
=4.5×（10+0.1）
=4.5×10+4.5×0.1
=45+0.45
=45.45