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2/3×5分之4+1/5÷4分之3的简便计算

5分之4×3分之2+5分之1÷4分之3 =5分之4×3分之2+5分之1×3分之4 =5分之4×3分之2+5分之1×2×3分之4 =5分之4×3分之2+5分之1×2×3分之4 =3分之2×(5分之4+5分之1×2) =3分之2×5分之6 =5分之4

解: (4/5-1/2×2/5)÷2/3 =(4/5-1/5) *3/2 =3/5 *3/2 =9/10

两边同时乘以4,具体过程如下!

(1/2-1/5)÷3/4÷3/5 =3/10÷3/5÷3/4 =1/2÷3/4 =2/3 ----------------------------------------------------------

3分之2+5分之4-3分之1用简便计算 =2/3-1/3+4/5 =1/3+4/5 =5/15+12/15 =17/15 =1又2/15

1/12×3/4+(4/5-2/3)×1/4 =1/16+1/5-1/6 =1/16+1/30 =(15+8)/240 =23/240

三分之二除以小括3/4+12分之1×4/5小括号简便运算 2/3÷(3/4+1/12x4/5) =2/3÷(3/4+1/15) =2/3÷49/60 =40/49

5.2×3.4÷1.7+5.2 =5.2×(3.4÷1.7)+5.2 =5.2×2+5.2 =5.2×(2+1) =5.2×3 =15.6

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