rprt.net
当前位置:首页 >> 2.8x0.25+0.25怎么用简便计算 >>

2.8x0.25+0.25怎么用简便计算

2.8x0.25+0.25 解: 原式= =0.25×(4x0.7)+0.25 =0.25x4x0.7+0.25 =0.7+0.25 =0.95

2.8x0.25+0.25怎么用简便计算 =0.25x(2.8+1) =0.25x3.8 =0.25x(4-0.2) =0.25x4-0.25x0.2 =1-0.05 =0.95

如图

2.2×0.25+2.8×0.25 =0.25×(2.2+2.8) =0.25×5 =1.25

7.5×(2.8÷0.25)。 =7.5÷0.25*2.8 =30*2.8 =84

7.2÷0.25+2.8×4=40。 简便计算过程如下: 7.2÷0.25+2.8×4 =7.2×1÷0.25+2.8×4 =7.2×4+2.8×4 =4×(7.2+2.8) =4×10 =40 扩展资料: 乘法: 1)乘法交换律:a*b=b*a 2)乘法结合律:a*b*c=(a*b)*c=a*(b*c) 3)乘法分配律:(a+b)*c=a*c+b*c;(a-b)...

4.5÷4+2.8x25%+27x0.25 =4.5×1/4+2.8x1/4+27x1/4 =(4.5+2.8+27)×1/4 =34.3×1/4 =8.575

9.42+2.8÷0.25 = 9.42+2.8×4 = 9.42+11.2 = 20.62

七分之一x0.25x2.8 =1/7x2.8x0.25 =0.4x0.25 =0.1

9.42加2.8除以0.25 =9.42+(2.8×4)÷(0.25×4) =9.42+11.2÷1 =9.42+11.2 =20.62

网站首页 | 网站地图
All rights reserved Powered by www.rprt.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com