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五年级简便运算

75×102 =75*(100+2) =75*100+75*2 =7500+150 =7650 1.2×2.5 =(1+0.2)*2.5 =1*2.5+0.2*2.5 =2.5+0.5 =3 90.1-9.9 =(90+0.1)-(10-0.1) =90+0.1-10+0.1 =80+0.2 =80.2 90.1×9.9 =(90+0.1)*(10-0.1) =900-9+1-0.01 =908-0.01 =907.99 3....

用简便方法计算下列各题 0.25×0.28 0.125×3.2×2.5 35×40.2  0.25×4÷0.25×4 3.5×9.9 3.5×99+3.5  3.5×101-3.5 3.5×9.9+3.5×0.1 3.5×2.7+35×0.73 3.5×2.7-3.5×0.7 (32+5.6)÷0.8 3.5÷0.6-0.5÷0.6 4.9÷3.5 7÷0.25÷4 7÷0.125 ÷8  7.35...

(1)2.5*32*0.125 =(2.5*4)*(8*0.125) =10*1 =10 (2)3.5-7+6.5 =3.5+6.5-7 =3 (3)1.2×2.5+0.8×2.5 =2.5(1.2+0.8) =25 (4)8.9×1.25-0.9×1.25 =1.25(8.9-0.9) =10 (5)12.5×7.4×0.8 =12.5×0.8×7.4 =74 (6)6.5×9.5+6.5×0.5 =6.5×(9....

965-(388+465) 24×125 52÷32×8 70÷(14×1) 63×58-63×39 92×99+92 855-422+222 58×299 52×69 80÷(5×4) 20×3×25 16×6+16×4 1411-(98+811) 403+(131+397) 250÷2÷25 642-158-142 125×15÷25 273+118+127 270÷6÷5 (25+5)×4 477-403+23 2400÷24÷25 81×29...

例1、5.76+13.67+4.24+6.33 =(5.76+4.24)+(13.67+6.33) =10+10 =20 例2、37.24+23.79-17.24 =37.24-17.24+23.79 =20+23.79 =43.79 例3、 4×3.78×0.25 =4×0.25×3.78 =1×3.78 =3.78 例4、 125×246×0.8 =125×0.8×246 =100×246 =24600...

小学数学五年级上册简便计算练习(160道) 请用简便方法计算下列各题 3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.5 7.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7) 3.29+0.73-2.29+2.27 3.29×0.25×4 0.125×8.8 0.25×0.28 0.125×3.2×2...

简便方法计算下列各题 0.25×0.28 0.125×3.2×2.5 35×40.2 0.25×4÷0.25×4 3.5×9.9 3.5×99+3.5 3.5×101-3.5 3.5×9.9+3.5×0.1 3.5×2.7+35×0.73 3.5×2.7-3.5×0.7 (32+5.6)÷0.8 3.5÷0.6-0.5÷0.6 4.9÷3.5 7÷0.25÷4 7÷0.125 ÷8 7.35÷(7.35×0.25) 7.35÷(7...

常见以下几类题型: 一、运用加法结合律进行简算 (a+b)+c=a+(b+c) 或a+b+c+d=(a+c)+(b+d) 例1、5.76+13.67+4.24+6.33 =(5.76+4.24)+(13.67+6.33) =10+10 =20 例2、37.24+23.79-17.24 =37.24-17.24+23.79 =20+23.79 =43.79 二...

五年级上册简便算法题 10÷3.14-6.86÷3.14 37.68÷0.25÷4 3.75-(2.75-1.3) 37.56-(18+7.56) 0.77÷14 4.5×9.8 0.7÷0.125 0.7÷0.25 2.5×3.2×12.5 12.5×9.6×0.25 3.75-(2.8-1.25) 37.65÷0.4÷0.25 3.125÷8÷0.125 37.65-4.75-3.25 25×6.4×12.5 ...

5.6×2.9 3.77×1.8 0.02×96 5.22×0.3 9.99×0.02 5×2.44 1.666×6.1 9.432×0.00 5.6×6.5 4.88×2.9 5.61×4.3 8.9×2.4 5.5×55 9.77×0.02 1.384×5.1 8.78×83 2.6×6 0.059×0.2 4.268×1.7 57×5.7 9.46×2.85 17.8×6.4 1.5×4.9 2.5×0.88 5.555×5.2 2.22×3....

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