3.8×2.8+28×0.12的简便方法

3.8×2.8+28×0.12的简便方法
2025-06-28 05:09:25
推荐回答(4个)
回答1:

3.8×2.8+28×0.12的简便方法

解:
3.8×2.8+28×0.12
=3.8×2.8+2.8×1.2
=2.8×(3.8+1.2)
=2.8×5
=14

回答2:

3.8×2.8+28×0.12
=3.8×2.8+2.8×1.2
=2.8×(3.8+1.2)
=2.8×5
=14

回答3:

=0.38*28+28*0.12
=(0.38+0.12)*28
=0.5*28
=14

回答4:

3.8*2.8+2.8*1.2
=2.8*(3.8+1.2)
=2.8*5
=14