1.76乘以22,75乘以72乘以2简便算法
1.76乘以22目录
17.6*8.8 22*1.76-17.6
=17.6*8.8 2.2*17.6-17.6
=17.6*(8.8 2.2-1)
=17.6*10
=176
75乘以72乘以2简便算法
=75x2x8x9
=150x8x9
=1200x（10-1）
=12000-1200
=10800
17.6*8.8 22*1.76-17.6
=17.6*8.8 2.2*17.6-17.6
=17.6*(8.8 2.2-1)
=17.6*10
=176