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脱式计算9.6÷7+71×4

原式=48/5-11/7+284 =9又3/5-1又4/7+284 =292又1/35

(1)1.29+3.7+0.71+6.3=1.29+0.71+(6.3+3.7)=2+10=12;(2)528×78+472×78=(528+472)×78=1000×78=78000;(3)125×89×8=125×8×89=1000×89=89000;(4)57×101-57=57×(101-1)=57×100=5700;(5)19×96-962÷74=1824-13=1811;(6)(520+48...

51又2/3÷5/3+71又3/4÷7/4+91又4/5÷9/5 = 51又2/3×3/5+71又3/4×4/7+91又4/5×5/9 = (50+5/3)×3/5+(70+7/4)×4/7+(90+9/5)×5/9 =30+1+40+1+50+1 =123

31+41+51=123

51又2/3÷5/3+71又3/4÷7/4+91又4/5÷9/5=51又2/3×3/5+71又3/4×4/7+91又4/5×5/9 =51×3/5+2/3×3/5+71×4/7+3/4×4/7+91×5/9+4/5×5/9 =153/5+2/5+284/7+3/7+455/9+4/9 =155/5+287/7+459/9 =31+41+51 =123

(1)8×4×12.5×0.25,=(8×12.5)×(4×0.25),=100×1,=100;(2)8.7×2.9+71×0.87,=8.7×2.9+7.1×8.7,=8.7×(2.9+7.1),=8.7×10,=87;(3)730÷[(56-23)×24],=730÷[56×24-23×24],=730÷[20-16],=730÷4,=7120;(4)(12+13-14)×12,=...

怎么简便计算 4-6/11÷21/22-3/7 =4-4/7-3/7 =4-(4/7+3/7) =4-1 =3

7.1÷0.25 =(7.1x4)÷(0.25x4) =28.4÷1 =28.4

简便计算. 216+305 25×32 47+236+64 6×(15×9) 402+359 43+78+122+257 25×(26×4) 25×44 354+(229+46) (1)9.26-4.38-2.62 (2)9.26-(4.38+2.26) (3)9.26-(4.38-2.74 (1)4.75-9.64+8.25-1.36 (2)14.529+(2.471-3) (3)38.68-(4.7-2.32) 415-176-24 8....

1. 41又2/3÷5/3+71又3/4÷7/4+91又4/5÷9/5 =(40+5/3)*3/5+(70+7/4)/7/4+90+9/5/9/5 =24+1+40+1+50+1 =117 2. 1/5×27+3/5×41 =1/5*(27+3*41) =1/5*(27+123) =1/5*150 =30 3. 5/11×1/20+3/11×1/2+5/11×1/2 =1/11*(5/20+3/2+5/2) =1/11*(1/4+6/4+10/...

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