Question

38.2*0.28+3.82*6.1+0.382*11的简便运算

Answer 1

38.2*0.28+3.82*6.1+0.382*11

=38.2×0.28+38.2×0.61+38.2×0.11

=38.2×（0.28+0.61+0.11）

=38.2×1

=38.2

扩展资料

乘法分配律

公式：(a+b)×c=a×c+b×c

示例：

3.68×5.7＋6.32×5.7

=(3.68＋6.32)×5.7

=10×5.7

=57

变式：(a-b)×c=a×c-b×c

Answer 2

38.2×0.28+3.82×6.1+0.382×11
=3.82×2.8+3.82×6.1+3.82×1.1
=3.82×（2.8+6.1+1.1）
=3.82×10
=38.2