19/20+29/30+41/42+55/56+71/72= 简便方法做
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19/20+29/30+41/42+55/56+71/72=简便方法做19/20+29/30+41/42+55/56+71/72=简便方法做19/20+29/30+41/42+55/56+71/72=
19/20+29/30+41/42+55/56+71/72= 简便方法做
19/20+29/30+41/42+55/56+71/72= 简便方法做
19/20+29/30+41/42+55/56+71/72= 简便方法做
19/20+29/30+41/42+55/56+71/72
=1-1/20+1-1/30+1-1/42+1-1/56+1-1/72
=5-(1/20+1/30+1/42+1/56+1/72)
=5-(1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9)
=5-(1/4-1/9)
=5-5/36
=4又29/36
简算 19/20+29/30+41/42+55/56+71/72
1/2+5/6+11/12+19/20+29/30+41/42+55/56=怎麽做?
19/20+29/30+41/42+55/56+71/72= 简便方法做
1/2+5/6+11/12+19/20+29/30+41/42+55/56怎么简算?急需1/2+5/6+11/12+19/20+29/30+41/42+55/56的简算!
10-11/6+19/12-29/20+41/30-55/42+71/56-89/72(简便计算)简便计算,
1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72 怎么做 要有过程
6分之5+12分之11+20分之19+30分之29+42分之41+56分之55
11/20-19/30+29/42-41/56+55/72-71/90+89/110-109/132,要有过程
20分之19加30分之29加42分之41加56分之55加72分之71
5/6十11/12十19/20十29/30十41/42十55/56=
简便计算 5/6+11/12+19/20+29/30+55/56+71/72=5/6+11/12+19/20+29/30+41/42+55/56+71/72
1-1/2+5/6+11/12+19/20+29/30+41/42+55/56+71/72【会的说,不会的别说】急急急急*1000000000000000000000000000000000000000
(1/2)+(5/6)+(11/12)+(19/20)+(29/30)+(41/42)+(55/56)+(71/72)+(89/90)简算
1/2,-5/6,11/12,-19/20,29/30,-41/42……第55个和第100个数是()()
1/2+5/6+11/12+19/20+29/30+41/42=?=多少
1/2+5/6+11/12+19/20+29/30+41/42简便算法
1/2+5/6+11/12+19/20+29/30+41/42
11/12+19/20+29/30+41/42的简便算法