{1-328÷(328×2.5)}÷2.4=?1又1/4×17.6+36÷4/5+1.25=?201.2×22/25+2012×3/200-20.12×3/10=?简便算法

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 16:35:49
{1-328÷(328×2.5)}÷2.4=?1又1/4×17.6+36÷4/5+1.25=?201.2×22/25+2012×3/200-20.12×3/10=?简便算法

{1-328÷(328×2.5)}÷2.4=?1又1/4×17.6+36÷4/5+1.25=?201.2×22/25+2012×3/200-20.12×3/10=?简便算法
{1-328÷(328×2.5)}÷2.4=?1又1/4×17.6+36÷4/5+1.25=?201.2×22/25+2012×3/200-20.12×3/10=?
简便算法

{1-328÷(328×2.5)}÷2.4=?1又1/4×17.6+36÷4/5+1.25=?201.2×22/25+2012×3/200-20.12×3/10=?简便算法
{1-328÷(328×2.5)}÷2.4=(1-328÷328÷2.5)÷2.4=(1-2/5)×4/9=3/5×4/9=4/15
1又1/4×17.6+36÷4/5+1.25=5/4×17.6+36×5/4+5/4=5/4×(17.6+36+1)
=5/4×54.6=68.25
201.2×22/25+2012×3/200-20.12×3/10=201.2×0.88+2012×0.015-20.12×0.3
=20.12×8.8+20.12×1.5-20.12×0.3=20.12×(8.8+1.5-0.3)=20.12×10=201.2

有计算器吧