1.73×1.3+0.27×1.3-1.3用简便方法计算
问题描述:
1.73×1.3+0.27×1.3-1.3用简便方法计算
答
1.73×1.3+0.27×1.3-1.3
=(1.73+0.27-1)×1.3
=1×1.3
=1.3