3.2×0.2+0.8的简便运算

3.2×0.2+0.8的简便运算
2024-11-28 14:23:23
推荐回答(3个)
回答1:

3.2×0.2+0.8
=0.8*【0.8+1】
=0.8*1.8
=1.44
满意采纳

回答2:

=3.2×0.2+4×0.2
=(3.2+4)×0.2
=7.2×0.2
=1.44

回答3:

=4X0.8X0.2十0.8=0.8X(0.8十1)=1.44