1/30+1/42+1/56+1/72要简便运算 快
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 04:35:24
![1/30+1/42+1/56+1/72要简便运算 快](/uploads/image/z/465538-58-8.jpg?t=1%2F30%2B1%2F42%2B1%2F56%2B1%2F72%E8%A6%81%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97+++%E5%BF%AB)
1/30+1/42+1/56+1/72要简便运算 快
1/30+1/42+1/56+1/72
要简便运算 快
1/30+1/42+1/56+1/72要简便运算 快
计算过程为:
1/5*1/6+1/6*1/7+1/7*1/8+1/8*1/9
=1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9
=1/5-1/9
=4/45
这一类的题都可以这么做
1/30+1/42+1/56+1/72+1/90
1/30+1/42+1/56+1/72+1/90
1/30+1/42+1/56+1/72 简算
1/30+1/42+1/56+1/72简便算法
1/30+1/42+1/56+1/72=
简算1/30+1/42+1/56+1/72=?
1/30+1/42+1/56+1/72=
1/30+1/42+1/56+1/72要简便运算 快
30分之1+42分之一+56分之1+72分之一
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1/4-1/20-1/30-1/42-1/56-1/72简便计算怎么做开学要用
1/12+1/20+1/30+1/42+1/56+1/72+1/90
1/12+1/20+1/30+1/42+1/56+1/72+1/90
1/6+1/12+1/20+1/30+1/42+1/56+1/72 简便计算
1/2+1/6+1/20+1/30+1/42+1/56+1/72等于多少?
1/2+1/6+1/20+1/30+1/42+1/56+1/72等于几?
1/6+1/12+1/20+1/30+1/42+1/56+1/72