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下面各题简便计算过程1,(5/8+5/8)乘4/25 2,(5...

1、(5/8+5/8)乘4/25=10/8乘4/25=5/4乘4/25=1/5 2、(5/6-2/3)乘9/10=(5/6-4/6)乘4/6=1/9 3、1-7/9除7/8=9/9-7/9除7/8=16/63

(5/8+5/6)÷4/25 =(5/8+5/6)×25/4 =5/8×25/4+5/6×25/4 =125/32+125/24 =875/96 =9又11/96

(1)15.25+4.72+4.75+5.28=(15.25+4.75)+(4.72+5.28)=20+10=30(2)12.7-4.8-5.2=12.7-(4.8+5.2)=12.7-10=2.7(3)34.82-(4.82+15.2)=34.82-4.82-15.2=30-15.2=14.8(4)9.85+4.9-7.85=(9.85-7.85)+4.9=2+4.9=6.9(5)8.64-2.4+2.36-...

4/13-2/15*4/13 =4/13(1-2/15) =4/13*13/15 =4/15 1/8*25*5/4*32 =1/8 * 32 * 25 *5/4 =5*25 =125

(1)4/(75%+50%-1) =4÷25% =16 (2)4.75*37.5%+8分之3*5.25 =4.75x3/8+5.25x3/8 =(4.75+5.25)x3/8 =10x3/8 =15/4 (3)5分之4×20%+5分之4 =4/5x(1+20%) =4/5x6/5 =24/25

35×40-315除3=1400-105=1295 8×25×125×4=(8×125)×(25×4)=1000×100=100000

42×125×8×5 =(42x5)x(125x8) =210x1000 =210000 23×5×2 =23x(5x2) =23x10 =230 25×9×4 =(25x4)x9 =100x9 =900 15×162×2 =(15x2)x162 =30x162 =4860 (250×125)×(4×8) =(250x4)x(125x8) =1000x1000 =1000000 供参考。

4.8×0·25==4.8*1/4=1.2 0.78×98=0.78*(100-2)=78-1.56=76.44 0.5×2.33×8=2.33*4=9.32 1·5×105=1.5*(100+5)=150+7.5=157.5 0·3×2·5×0·4=0.3*1=0.3 1·2×2·5+0.8×2·5=2.5*(1.2+0.8)=2.5*2=5

1. 0.4×125×25×0.8 =(0.4×25)×(125×0.8)=10×100=1000 2. 1.25×(8+10)=1.25×8+1.25×10 =10+12.5=22.5 3.9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 4.1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9 5.9999×1001=9999×(1000+1)=...

3/8+2.25+3/4+5.625 =0.375+5.625+2.25+0.75 =6+3 =9 谢谢,请采纳

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