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脱式计算,能简算的简单算,求班忙. 4.3×0.625+3...

0.625×5.8+5/8×3.2+62.5% =0.625x5.8+0.625x3.2+0.625 =0.625x(5.8+3.2+1) =0.625x10 =62.5; 2017×2015/2016 =(2016+1)x2015/216 =2016x2015/2016+1x2015/2016 =2015+2015/2016 =2015又2015/2016; (1/2+1/3+1/6)x24 =1/2x24+1/3x24+1/6x24 =1...

一、脱式计算 2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9 7.28×99+7.28 4.3×50×0.2 60-2.68×0.5 26×15.7+15.7×24 (2.275 +0.625)×0.28 3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8 9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46 8.05×3.4+7.6 6.58×4.5×0.9 2.8×0....

(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÷...

(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÷...

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....

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

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