66乘99加64的简便算法
问题描述:
66乘99加64的简便算法
答
=66*(100-1)-64=6600-(66+64)=6470
答
66 * 99 + 64 = 66 * 99 + 66 - 2 = 66 * (99 + 1) - 2 = 66 * 100 - 2 = 6598
答
66*99+64=66*100-2
答
=66乘(100-1)加64
=66乘100-66加64
=6600-2
=6598
答
66乘99加64
=66*(100-1)+64
=66*100-66+64
=6600-2
=6598