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五年级下册数学简便算法带答案

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...

(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....

0.89×100.1 146.5-(23+46.5) 3.83×4.56+3.83×5.44 4.36×12.5×8 9.7×99+9.7 27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 0.65×101 3.2×0.25×12.5 (45.9-32.7)÷8÷0.125 3.14×0.68+31.4×0.032 5.6÷1.25÷0.8÷2.5÷0.4 7.2×0.2+2.4×1.4 8.9×1.01 7.74×(2....

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 ...

五年级奥数题计算题 1、0.2008+2.008+20.08+200.8+2008 =0.2008×(1+10+100+1000+10000) =0.2008×11110 =2230.888 2、1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷……÷(2007÷2008)=1×3/2×4/3×5/4×6/5×……×2008/2007 =2008 3、1+1/3+1/6+1/10+……+1/2009×...

在网上寻找具体的参考书上的答案是很难的,在网上是问不到答案的哈 还是自己多思考,不会的找同学询问 大家讨论,对自己是有好处的

看在我都看不懂你问的什么的份上,,给个采纳吧。。谢谢。。

乘法交换律: a × b = b × a 25 × 37 × 4 75 × 39 × 4 65 × 11 × 4 125 × 39 × 16 8 × 11 × 125 5 、乘法结合律: ( a × b )× c = a ×( b × c ) 38 × 25 × 4 65 × 5 × 2 42 × 125 × 8 6 ×( 15 × 9 ) 25 ×( 4 × 12 )

*是乘号 /是除号 0.3*2.5*0.4 50*0.13*0.2 0.8*630*0.125 0.78*101 1.5*102 9.8*25 1.2*2.5+0.8*2.5 1.25*0.7*0.8 0.038*5*2.1 3.8+4.5+6.2 93/0.31/3 3.25-0.84-0.16 88*0.25*4 2.8*3.6+1.4*2.8 63*10.1 (3.2+0.128)/0.8 9.83*1.5+6.17*1.5 ...

马上给你,等一下采纳可以吗?

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