72乘于12加88简便方法怎么做

72x12+88
=8x9x12+8x11
=8x(9x12+11)
=8x(9x12+12-1)
=8x[(9+1)x12-1]
=8x(10x12-1)
=8x120-8
=960-8
=952
或
72x12+88
=72x12+100-12
=12x(72-1)+100
=12x71+100
=12x(70+1)+100
=12x70+12+100
=840+12+100
=952
再问： 小学三年级 的题目 有没有在简单点的
再答： 72x12+88 =(70+1+1)x12+88 =70x12+12+(12+88) =840+100+12 =940+12 =952 我快没招了