0.34×12.5+0.125×66的简算 列递等式

问题描述:

0.34×12.5+0.125×66的简算 列递等式

0.34×12.5+0.125×66
=0.34×12.5+12.5×0.66
=(0.34+0.66)×12.5
=1×12.5
=12.5