67×0.38+6.3×6.7-0.67简便计算
问题描述:
67×0.38+6.3×6.7-0.67简便计算
答
=6.7*3.8+6.3*6.7-6.7*0.1=(3.8+6.3+0.1)*6.7=10*6.7=67
67×0.38+6.3×6.7-0.67简便计算
=6.7*3.8+6.3*6.7-6.7*0.1=(3.8+6.3+0.1)*6.7=10*6.7=67