1.2X2.5X8.8X2.5的简便计算
问题描述:
1.2X2.5X8.8X2.5的简便计算
答
1.2X2.5X8.8X2.5
=0.3x4x2.5x2.2x4x2.5
=0.3x10x2.2x10
=3x22
=66