25ᠧ0.49+0.25ᠧ51怎么简便?

2025-04-13 20:09:44
推荐回答(3个)
回答1:

25✘0.49+0.25✘51

=25✘0.49+25✘0.51............根据积不变的规律改写

=25×(0.49+0.51)............乘法的分配律

=25×1

=25

回答2:

25×0.49+0.25×51=0.25×49+0.25×51=0.25×(49+51)=0.25×
100=25

回答3:

25*0.49+0.25*51
=0.25*49+0.25*51
=0.25*(49+51)
=0.25*100
=25