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-14×3/4-5×3/8 1/4×(-14)一5/8×5

3/8+5/40+4/5 15/40+5/40+32/40 52/40 13/10

4/3—(2/5+3/1O丿=4O/3O一{I2/30+9/3o)=4o/30_21/3o=丨9/30先通分再计算

【4-(5/8-4/8)】÷2/3 =(4-1/8)x3/2 =31/8x3/2 =93/16 =5又13/16 5/6x3/4+5/6x1/4 =5/6x(3/4+1/4) =5/6x1 =5/6

27分之46/[2-(6分之5-4分之3)] =46/27÷[2-1/12] =46/27÷23/12 =46/27×12/23 =8/9 [8-(6分之5-3分之2)]/50分之47 =[8-1/6]×50/47 =47/6×50/47 =25/3 8-8分之3*5分之6/14分之3+4分之5 =8-9/20×14/3+4/5 =8+0.8-2.1 =8.8-2.1 =6.7。

40×(3/4+1/2-5/8) =40×3/4+40×1/2-40×5/8 =30+20-25 =25

1.25x79.5×0.8 =1.25×0.8x79.5 =1x79.5 =79.5 24×(1/3+1/8-1/4) =24×1/3+24×1/8-24×1/4 =8+3-6 =5

14.15+(-8又1/5)+3.85+(-2又4/5) =(14.15+3.85)-(8又1/5+2又4/5) =18-11 =7

解: 3/8-(3/4×1/10-5/8) =3/8-3/40+5/8 =(3/8+5/8)-3/40 =1-3/40 =37/40 2.875÷(1/4+9/4×1/3) =2.875÷(1/4+3/4) =2.875÷1 =2.875

计算器 1-5/8/25/28-3/10 = 0.69910714285714 计算器 4/5*7/8+7/8/5 = 0.875

-2.4+4.7-0.5+3.4-3.5=-2.3-0.5+3.4-3.5=-2.8+3.4-3.5=-0.6-3.5=-4.1不知道对错与否仅供参考

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