(1)181818/218218x182182/818181 (2)84/10x1/4-16/25x4/15+10/3x9/10(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
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(1)181818/218218x182182/818181 (2)84/10x1/4-16/25x4/15+10/3x9/10(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
(1)181818/218218x182182/818181 (2)84/10x1/4-16/25x4/15+10/3x9/10
(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
(1)181818/218218x182182/818181 (2)84/10x1/4-16/25x4/15+10/3x9/10(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
(1)181818/218218x182182/818181
=181818*182182/ 218218*818181
=18*10101*182*1001/218*1001*81*10101
=18*182/218*81
=182/981
(2)84/10x1/4-16/25x4/15+10/3x9/10
=21/10-256/1500+3
=4+1650/1500-256/1500
=4又697/750
(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
=(87-71)*1/47-1/71*(87-16)+1/97*(16+71)
=16/47-1+87/97
=16/47-10/97
=1082/4089
218218分之181818乘以818181分之182182
181818/218218*182182/818181简单运算
181818÷218218×(182182÷818181)?=
(1)181818/218218x182182/818181 (2)84/10x1/4-16/25x4/15+10/3x9/10(3)87x(1/47-1/71)+16x(1/71+1/97)-71x(1/47-1/97)
18分之1+1818分之202+181818分之50505+18181818分之10101010=?拜托,我赶时间的 ==.
18181818/81818181-181818/818181等于?
简便计算218217*217218-217217*218218
18181818分之81818181减181818分之818181
帮我解一道奥数题,8181818181/1818181818-818181/181818
注:/是分号线 列如5分之2 是5/2!自己写的!好用!第一道 2/1+(2/3+3/1)+(4/3+4/2+4/1)+(5/4+5/3+5/2+5/1)+……+(50/49+50/48+……+50/1) 第二道 (-97979797/18181818)-(-979797/181818)
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