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五年级分数简便运算题

4/7+1/14-1/2=8/14+1/14-7/14=2/14=1/75/3-3/8-5/8 =5/3-(3/8+5/8)=5/3-1=2/33/5+3/11+7/5+11 =(3/5+7/5)+11+3/11=2+11+2/11=13又2/113/4-{5/6-1/3}=3/4-(5/6-2/6)=3/4-1/2=3/4-2/4=1/43/4+1/5=4/5 3/4-1/5=11/20 5/6+2/9=19/18 5/6-2/9=11/18 2/3+

39.178-145÷5*6+42 40.812-700÷(9+31*11) 41.85+14*(14+208÷26) 43.120-36*4÷18+35 44.(58+37)÷(64-9*5) 45.(6.8-6.8*0.55)÷8.5 46.0.12* 4.8÷0.12*4.8 47.(3.2*1.5+2.5)÷1.6 48.6-1.6÷4= 5.38+7.85-5.37= 49.7.2÷0.8-1.2*5= 6-1.19*3-0.43= 50.6

1. 3/7 * 49/9 - 4/3 2. 8/9 * 15/36 + 1/27 3. 12* 5/6 2/9 *3 4. 8* 5/4 + 1/4 5. 6÷ 3/8 3/8 ÷6 6. 4/7 * 5/9 + 3/7 * 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 * 5/6 + 5/6 10. 3/4 * 8/9 - 1/3 11. 7 * 5/49 + 3/14 12. 6 *( 1/2 + 2/3 ) 13. 8 * 4/5 + 8 * 11/5

一、口算下面各题.(23分) 10-2.65= 0.9*0.08= 528-349= 6+14.4= 24÷0.04= 12.34-2.3= 0÷3.8= 0.77+0.33= 7÷1.4= 67.5+0.25=7.2÷8*4= 5-1.4-1.6= 400÷125÷8= 1.9*4*0.5= 80*0.125= 3* = 6 6= 2 -( + )= 10 2= 3.2*7÷3.2*7= ( - )*12= 187.7*11-187.

1/2+1/3-1/4+1/5-1/6=3/4-3/5+4/5-4/6+5/6-5/7=1/2-1/2-1/2+1/2=1/100000+3-32/867=1+1/2-1/3=15265357163237515632536721653/10+1=67/68+34/35-23/24=89/90+123/124-234/235=1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4

nan

太简单了 注:\代表分号,/代表除号,2\1表示二分之一,5+4\1=5 4\1表示5又4/1(带分数) 5\6*5=6 5\4*2=5/8 2\1*4=2 4 4\5*2=2/5 3\1*5=3/5 7\2*6=7/12 5\2*6=5/12 3\5*2=3/10 5\7*2=5/14 5\6*1=5/6 7\9*2=7/18 5\4*2=5/8 2\45*0=0 5\6-5\4=5\2 2\

题有很多,举个例子吧: 1/2+1/6+1/12+1/20+1/30+1/42=(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7=1-1/7=6/7

73.8-1.64-13.8-5.36 66.86-8.66-1.34 0.25*16.2*43.72*3.5+6.28*3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)4.8*7.8+78*0.52 3.6*102 6.4*0.25+3.6÷432+4.9-0.9 4.8-4.8*0.5 (1.25-0.125)*84.8*100.1 56.5*9.9+56.5 7.09*10.8-0.8*7.094.02+5.4+0.98 5.17-1.

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