20道分数简算
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4/9÷6+5/9×1/612×(1-2/3÷3/4)(21/26×13/7+1/2)÷40%1/5÷(1-1/3×1/2)9/10×[7/8÷(4/5+1/4)]9×5/6+5/6÷1/95/6÷5
1.3/4*1/9+1/4*1/92.5/8*2/7+5/8*5/73.101*1/5-1/5*214.31*5*6-5/65.8*4/5+8*11/56.6*(1/2+2/3)7.(3/5-1*2)
解题思路:此题不易简算解题过程:答案见截图。最终答案:略
这些是小数的,现在找不到分数的,你只能锻炼锻炼自己,练一下小数化分数了,30.8÷[14-(9.85+1.07)][60-(9.5+28.9)]÷0.182.881÷0.43-0.24×3.520×[
175-75÷2568+35×13725-(125+237)(114+166)÷35432÷(9×8)189-60+40三、简便计算.216+315÷1525×32÷447+236÷3+646×(15
方程有:一元,二元方程;一次,二次方程;分式,整式方程;一元一次,一元二次方程;二元一次方程,二元二次方程等等;你需要哪一类?再问:3/5乘以2/3=??............再答:3/5X2/3=
1.1/5+1/25+(1/6-3/5)2.7/36+5/6-2/93.5/44-(7/30-2/11)+1/24.1/2+1/3+1/4+1/5+1/65.1+1/2+1/6+1/12+1/20+1
6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4.02+5.4+0.985.17-1.8-3.213.75-(3.75+6.48)3.68+7.56-2.687
2+1/[1-(3/4)](3/4)*(2/5)/(3/4)*(2/5)4/(1/5)-(1/5)/4(16/5)/(5/9)*(5/16)[(3/4)-(1/2)-(1/6)]*123/(3/4)-
(1/2+2/3)*6=1/2*6+2/3*6=3+4=7(2/3+3/4)*12=2/3*12+3/4*12=8+9=17(1/3+1/4)*12=1/3*12+1/4*12=4+3=7(1/4+1
①1/1×2+1/2×3+1/3×4.1/99×100=1-1/2+1/2-1/3+1/3-1/4+.+1/99-1/100=1-1/100=99/100②(4/9+6/7+5/21)÷(2/9+3/
(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6),经过正负抵销后的计算,最后答案简化成(1-1/6)=5/6再问:再问:这道题呢
11/1*2*3+1/2*3*4+.+1/98*99*10021/2-1/4-1/198+1/2003.(23/4-3/4)*(3*6+2)44.3/7×49/9-4/35.8/9×15/36+1/2
解题思路:运算解题过程:varSWOC={};SWOC.tip=false;try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?
原式=(1+1/2)(1-1/2)(1+1/3)(1-1/3)················(1+1/2001)(1-1/2001)=3/2*1/2*4/3*2/3··············200
1.125*3+125*5+25*3+252.9999*3+101*11*(101-92)3.(23/4-3/4)*(3*6+2)4.3/7×49/9-4/35.8/9×15/36+1/276.12×
7/10x48+48x3/10=(7x48)/10+(48x3)/10=48x(7+3)/10=48;24x(5/12-1/24)=24x(10/24-1/24)=24x9/24=9;(20+4/5)
13/7×11/8-3/7×13/8=11/7×13/8-3/7×13/8=(11/7-3/7)×13/8=8/7×13/8=13/7
和整数简算道理一样,应用运算定律把可以得整数的先算出来.
1/3乘以7除以1/3=1/3除以1/3乘以7=1乘以7=7(7/9+7/6)乘以4/21=7/9乘以4/21+7/6乘以4/21=4/27+2/9=4/27+6/27=10/271/4除以5/8+3