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6.4+3.6x5.2能简便吗?

能否简便要看是否有公因素。 6.4=8x0.8 3.6=4x0.9 5.2=2x2.6 所以 6.4+3.6x5.2 =8x0.8+4x0.9x2x2.6 =8x(0.8+0.9x2.6) =8x(0.8+2.34) =8x3.14 =25.12 其实还不如直接计算 6.4+3.6x5.2 =6.4+18.72 =25.12 随你喜欢,爱用哪种就用哪种。

5.2×6.4+5又1/5乘3.6 =5.2*6.4+5.2*3.6 =5.2*(6.4+3.6) =5.2*10 =52 你好!如果我的回答对你有帮助,请采纳,谢谢。 也欢迎继续追问。

4.8x7.8+78x0.52 =7.8×(4.8+5.2) =7.8×10 =78 6.4x0.25+36除以4 =4×0.25×1.6+9 =1.6+9 =10.6

(1)4×3.75+0.25=4×4=16=0(×)改正:4×3.75+0.25=15+0.25,=15.25;(2)6.4+3.6×5.3=10×5.3=53(×)改正:6.4+3.6×5.3=6.4+19.08=25.48;(3)15.8-0.8×2=15×2=30(×)改正:15.8-0.8×2=15.8-1.6,=14.2;(4)4.5×0.9+6.8=4.05+6.8=4.73.(...

3.6+6.4+5分之4+3又5分之4 =10+4.8 =14.8 3又7分之2-1又9分之2+6又7分之五-3又9分之7 =(3又7分之2+6又7分之五)-(1又9分之2+3又9分之7) =10-5 =5 12.5*(80-8+0.8) =12.5*80-12.5*8+12.5*0.8 =1000-100+10 =910 3x-2.4=6.6 3x=9 x=3 (x-2)/1...

3又3/5*25又2/5+37.9*6又2/5 =3.6*25.4+25.4*6.4+12.5*6.4 =(3.6+6.4)*25.4+12.5*8*0.8 =10*25.4+100*0.8 =254+80 =334

2.8x3.6+6.4x2.8 =2.8X(3.6+6.4) =2.8X10 =28

6.4÷0.5÷2 =6.4÷(0.5×2) =6.4÷1 =6.4 1.6÷0.04÷0.16 =1.6÷0.16÷0.04 =10÷0.04 =250 1.8÷[0.6x(4-2.5)] =1.8÷[0.6x1.5] =1.8÷0.9 =2

4,8X×5,2=6,4 24/5X×26/5=32/5 24/5X=32/5÷26/5 24/5X=32/5×5/26 24/5X=16/13 X=16/13×5/24 X=10/39

17.5一(2.05一6.4)等于多少,用简便算法 =17.5+6.4-2.05 =23.9-2.05 =21.85

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