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1/2+2/3×括号3/4%1/6.脱式计算,能简便的要简便怎...

1/2+2/3×括号3/4-1/6。脱式计算 解:采用分配律, 原式=1/2+2/3x(3/4-1/6) =1/2+2/3x3/4-2/3x1/6 =1/2+1/2-1/9 =1-1/9 =8/9

1/2-1/4+3/6-1/8 =1/2+3/6-(1/4+1/8) =1/2+1/2-(2/8+1/8) =1-3/8=5/8

解: (1/6+3/4-2/3)*12 =1/6 *12+3/4 *12 -2/3 *12 =2+9-8 =11-8 =3

12x(3/4-1/2+5/6) =12x3/4-12x1/2+12x5/6 =9-6+10 =13

先彩钠如何,我帮你解提这边谢谢。

(1)13.6×3-40.6÷2,=40.8-20.3,=20.5;(2) 99×0.75+ 1 4 ×99 ,=99×(0.75+0.25),=99×1,=99;(3) ( 5 6 - 5 8 )×24 ,= 5 6 ×24- 5 8 ×24,=20-15,=5;(4) 121×100 1 121 ,=121×(100+ 1 121 ),=121×100+121× 1 121 ,=12100+1...

1、(285-15)÷3×6 =270x2 =540 2、168÷[(205-198)×4] =168÷(7x4) =6 3、1450÷[2×(16+9)] =1450÷50 =29

分别是119,1486,184,18,691.24

(1)4.5×5.2+4.5×4.8=4.5×(5.2+4.8)=4.5×10=45;(2)8.8×1.25=(8+0.8)×1.25=8×1.25+0.8×1.25=10+1=11;(3)0.4×(4.3×2.5)=4.3×(0.4×2.5)=4.3×1=4.3;(4)60.8-1.75-1.25=60.8-(1.75+1.25)=60.8-3=57.8;(5)0.4×(4.3×2.5)=4.3×...

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