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100道数学六年级下册比例计算题

3/5:x=1/3:2 x=3.6  3:8=15:x x=40  x:9=4:3 x=12  1/4:1/8=x:1/10 x=1/5  1.25:0.25=x:1.6 x=8  3/4:x=3:12 x=3  5:8=40:x x=64  x:3/4=1/5:2/5 x=3/8  140:2=x:5 x=350  6.5:x=3.25...

100道简便运算

简操作如下: 45.55 6.82 15.55 34.52-17.87-12.23 27.38-5.34 +2.62-4.66 6.43(1.4-0.57)23.75-8.64-3.46 21.63(8.5 9 63 ) 17.83-9.5-7.83-0.5 5.38 +88.2-2.38 +1.8 7.5-2.45 +7.5 +2.45 0.9 +0.99 +0.999 5.09(0.09 +1.23)9.36(4.36 ...

直接上网搜文库吧,不给悬赏就算了,还要200道加答案,还不如找机构去辅导

1. 6÷ 3/8 – 3/8 ÷6 =1/6x(3/8-3/8) =1/6x0 =0 2. 4/7 × 5/9 + 3/7 × 5/9 =(4/7+3/7)x5/9 =1x5/9 =5/9 3. 5/2 -( 3/2 + 4/5 ) =5/2-3/2-4/5 =1-4/5 =1/5 4. 6 ×( 1/2 + 2/3 ) =6x1/2+6x2/3 =3+4 =7 5. 8 × 4/5 + 8 × 11/5 =8x(4/5+11/5) =8x...

1丽丽和家家去书店买书,他们同时喜欢上了一本书,最后丽丽用自己的钱的5分之3,家家用自己的钱的3分之2各买了一本,丽丽剩下的钱比家家剩下的钱多5块。两人原来各有多少钱?书多少钱? 设丽丽有x元钱 家家有y元钱 得出: 3/5x=2/3y 2/5x=1/3y+5...

(时间一定)速度和路程成正比例 (长方形的宽一定)长方形的周长和长不成比例 (三角形的高一定)三角形的地和面积成正比例

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...

(1)2.64×1.7-2.64×0.7 =2.64×(1.7-0.7) =2.64×1 =2.64 (2)31.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.15×(10.7-0.7) =3.15×10 =31.5 (3)2.7×5.7-2.7+5.3×2.7 =2.7×(5.7-1+5.3) =2.7×10 =27 (4)0.625÷0.125×0.8 =(0.625×0.8)×8÷...

[3/4-7/8/(5/6+4/5)]*28 =[3/4-7/8÷49/30]*28 =[3/4-15/28]*28 =3/4*28-15/28*28 =21-15 =6 (1.25*4/5-0.76)/(1又3/8+1又1/40) =(1-0.76)/2.4 =0.24/2.4 =0.1 [(0.2+1/3)*4.5]/(8又1/20-6.45) =8/15*4.5/1.6 =2.4/1.6 =1.5 x+3又2/3=5 x*9又3/...

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