用简便方法计算4.05×2.9+0.405×70+0.405,急用.
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/06 23:47:30
![用简便方法计算4.05×2.9+0.405×70+0.405,急用.](/uploads/image/z/1986006-30-6.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%974.05%C3%972.9%2B0.405%C3%9770%2B0.405%2C%E6%80%A5%E7%94%A8.)
x){>eu
O6mS_[|t=Ӎ,
L@LsKYR="}rPd/NU
P#PP!\P(j@@F 1b 6Gu
用简便方法计算4.05×2.9+0.405×70+0.405,急用.
用简便方法计算4.05×2.9+0.405×70+0.405,急用.
用简便方法计算4.05×2.9+0.405×70+0.405,急用.
4.05×2.9+0.405×70+0.405 =0.405×29+0.405×(70+1) =0.405×29+0.405×71 =0.405×(29+71) =0.405×100 =40.5