Question

88×125-8x125的简便运算？

Answer 1

=125x(88-8)
=125x80
=10000

Answer 2

乘法分配律为：两个数的和与一个数相乘，先将它们与这个数分别相乘，再相加，积不变．即：（a+b）×c=a×c+b×c．反过来则：a×c+b×c=（a+b）×c
88×125-8×125
= 125× ( 88-8）
= 125×80
= 10,000