简便计算:68×32-784÷56=
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/05/05 17:41:04
简便计算:68×32-784÷56=
3500÷42=
3500÷42=
68×32-784÷56
= (70-2)*(30+2) - (7*112)/(7*8)
= 2100 + 2(70-30) - 4 - 112/8
= 2100 + 80 - 4 - 14
= 2180 - 18
= 2162
= (70-2)*(30+2) - (7*112)/(7*8)
= 2100 + 2(70-30) - 4 - 112/8
= 2100 + 80 - 4 - 14
= 2180 - 18
= 2162