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分数简便计算题及答案

8* 5/4 + 1/4 6÷ 3/8 3/8 ÷6 4/7 * 5/9 + 3/7 * 5/9 5/2 -( 3/2 + 4/5 ) 7/8 + ( 1/8 + 1/9 ) 9 * 5/6 + 5/6 3/4 * 8/9 - 1/3 7 * 5/49 + 3/14 6 *( 1/2 + 2/3 ) 8 * 4/5 + 8 * 11/5 31 * 5/6 5/6 5/7 * 3/25 + 3/7 3/14 ** 2/3 + 1/6 1/5 * 2/3 + 5/6 9/22 + 1/11 ÷ 1/2 5/

1/7+3/8+5/7=1/7+5/7+3/8=6/7+3/8=48/56+21/56=69/56先分母相同进行运算,再约分1-5/9-4/9=1-(5/9+4/9)=1-1=0连减几个数,等于减去这几个数相加4/11+5/6-4/11=4/11-4/11+5/6=0+5/6=5/6同分母先进行运算3/4-1/6+1/4=3

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

小学六年级简便计算 1.(1/69+2/71)乘23+25除以71 =1/69*23+2/71*23+25/71=1/3+(46/71+25/71)=1/3+1=4/32.(1+1/2)乘(1-1/2)乘(1+1/3)乘(1-1/3)乘..乘(1+1/9)乘(1-1/9) =3/2*1/2*4/3*2/3*10/9*8/9=1/2*10/9(中间的都约去了)=5/93.1/2乘

五年级下册数学口算题人教版600道17*40=100-63=3.2+1.68=2.8*0.4=14-7.4=1.92÷0.04=0.32*500=0.65+4.35=10-5.4=4÷20=3.5*200=1.5-0.06=0.75÷15=0.4*0.8=4*0.25=0.36+1.54=1.01*99=420÷35=25*12=135÷0.5=3/4+1/4=2+4/9=3-2/3=3/4-1

小学数学五年级上册简便计算练习1 请用简便方法计算下列各题0.25*0.28 0.125*3.2*2.5 35*40.2 0.25*4÷0.25*4 3.5*9.9 3.5*99+3.5 3.5*101-3.5 3.5*9.9+3.5*0.1 3.5*2.7+35*0.733.5*2.7-3.5*0.7 (32+5.6)÷0.8 3.5÷0.6-0.5÷0.64.9÷3.5 7÷0.25÷4 7÷

/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=? 9/7-8/5=? 2/1+3/2=? 8/5-6/1=? 5/3+7/2=? 6/7-8

1. 6÷ 3/8 3/8 ÷6 =1/6x(3/8-3/8)=1/6x0=02. 4/7 * 5/9 + 3/7 * 5/9 =(4/7+3/7)x5/9=1x5/9=5/93. 5/2 -( 3/2 + 4/5 )=5/2-3/2-4/5=1-4/5=1/54. 6 *( 1/2 + 2/3 )=6x1/2+6x2/3=3+4=75. 8 * 4/5 + 8 * 11/5=8x(4/5+11/5)=8x3=24 6. 31 * 5/6 5/6 =(31-1)x5/6=30x5/6=257. 4/5 * 25/16 + 2/3 * 3/4 =5/4+1/2=5/4+2/4=7/4

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.

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=1/4

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