(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)要简便
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![(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)要简便](/uploads/image/z/104335-7-5.jpg?t=%285%2F3%2B11%2F4%2B19%2F5%2B41%2F6%2B.%2B9899%2F100%29%C3%B7%EF%BC%8810%2F3%2B22%2F4%2B38%2F5%2B58%2F6%2B.%2B19798%2F100%EF%BC%89%E8%A6%81%E7%AE%80%E4%BE%BF)
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(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)要简便
(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)
要简便
(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)要简便
可以看出除数每一项都是被除数的两倍
所以原式等于1/2
(5/3+11/4+19/5+29/6+41/7+55/8)/(10/3+22/4+38/5+58/6+82/7+110/8)
(5/3+11/4+19/5+41/6+.+9899/100)÷(10/3+22/4+38/5+58/6+.+19798/100)要简便
(5-3+11-4+19-5+29-6+41-7+55-8)/(10-3+22-4+38-5+58-6+82-7+110-8)jyyjyy
找规律.2,3,5,8,12,_ 2/1,6/5,12/11,20/19,_,42/41
找规律,并填空.例如:1/5+2/5+3/5=2/5*3=6/5 ①1/11+2/11+3/11+4/11+5/11+6/11+7/11=4/11*( )=( )②19/1+19/2+19/3+19/4+19/5+19/6+19/7=4/11*( )=( )十万火急,急%>_
5/(2*3*4)+7/(3*4*5)+9/(4*5*6)+...+19/(9*10*11)
1/1+5/3+11/6+19/10+29/15+41/21+55/28+71/36+89/45=
3/19+4/19+5/19+6/19+...+19/19+20/19+21/19=?5/6-7/12+9/20-11/30+...+(19+18)/(18*19)-(20+19)/(19*20)=?
1+2-3-4+5+6-7-8+9+10-11-12.+41+42-43-44
小学找规律填数6,1,8,3,10,512,7()()15,16,13,19,11,22()()71/1.3/4,2/3,5/8,3/5,7/12()()1,3,8,16,27,41()()
简算3/19+4/19+5/19+6/19+...+19/19+20/19+21/19
动动脑,巧算3/19+4/19+5/19+6/19+.+19/19+20/19+21/19
计算(5/3+11/4+19/5+29/6)/(10/3+22/4+38/5+58/6
计算5/1*4-11/4*7+17/7*10-···+41/19*22
7 1 5 4 3 19 3 6 8 6 3 2 6 9 81 8 41 6 9 9 2 4 4 8 2
找规律填空:1/2、5/6、11/12、19/20、( )、41/42
1/2+5/6+11/12+19/20+29/30+41/42+55/56=怎麽做?
找规律填数1/2,5/6,11/12,19/20,( ),41/42.