0.45x12x0.2用简便办法计算

2025-06-27 21:37:59
推荐回答(2个)
回答1:

=0.45x12x0.2
=0.45x0.2x12
=0.09x12
=1.08

回答2:

0.45×12×0.2
=(0.45×0.2)×12
=0.09×12
=1.08