用你喜欢的方法去分拆解答...

14×3                                  7×15

=                                      =

=                                      =

=                                      =

25×2                                  4×32

=                                      =

=                                      =

=                                      =

【答案】42；105；

50；128

【解析】

根据“分拆成几个几加几个几”的方法：将14×3变为10×3+4×3；

将7×15变为7×10+7×5；

25×2变为20×2+5×2；

4×32变为4×30+4×2；进行计算即可。

14×3

=10×3+4×3

=30+12

=42

7×15

=7×10+7×5

=70+35

105

25×2

=20×2+5×2

=40+10

=50

4×32

=4×30+4×2

=120+8

=128