简算:34.5×76.5-345×6.42-12.3×14.5
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:2024/07/17 10:44:43
简算:34.5×76.5-345×6.42-12.3×14.5
![简算:34.5×76.5-345×6.42-12.3×14.5](/uploads/image/z/18452713-49-3.jpg?t=%E7%AE%80%E7%AE%97%3A34.5%C3%9776.5-345%C3%976.42-12.3%C3%9714.5)
34.5×76.5-345×6.42-12.3×14.5
=34.5×76.5-34.5×64.2-12.3×14.5
=34.5×(76.5-64.2)-12.3×14.5
=34.5×12.3-12.3×14.5
=(34.5-14.5)×12.3
=20×12.3
=246
=34.5×76.5-34.5×64.2-12.3×14.5
=34.5×(76.5-64.2)-12.3×14.5
=34.5×12.3-12.3×14.5
=(34.5-14.5)×12.3
=20×12.3
=246
34.5*76.5-345*6.42-123*1.45
34.5×76.5×-345×6.42-123×1.45 要简算
34.5*76.5-123*1.45-345*6.42如何简算?
34.5×76.5-345×6.42-123×1.45(简便算法)
34.5乘76.5-345乘6.42-123乘1.45
34.5乘76.5减345乘6.42减123乘1045简便方法
34.5*76.5-345*6.42-123*1.45用简便方法怎算
请问“34.5乘76.5--34.5乘6.42-123乘1.45”怎样才能简便计算
计算123+234+345+456+567+678+789/12.3+23.4+34.5+45.6+56.7+67.8+
巧算:(100+12.3+23.4)×(12.3+23.4+34.5)-(100+12.3+23.4+34.5)×(12
0.7*24.5+0.7*76.5-0.7简算
1.7*24.5+0.7*76.5-0.7简算