136乘以17减去135乘以5减去135乘以2的简便算法
问题描述:
136乘以17减去135乘以5减去135乘以2的简便算法
答
136X17-135X5-135X2
=(135+1)X17-135X5-135X2
=135X17+17-135X5-135X2
=135(17-5-2)+17
=135X10+17
=1350+17
=1367