用简便方法计算:7.8*53.9+5.39*22用简便方法计算:0.01+0.02+0.03+0.04+···0.97+0.98+0.99
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 13:28:43
![用简便方法计算:7.8*53.9+5.39*22用简便方法计算:0.01+0.02+0.03+0.04+···0.97+0.98+0.99](/uploads/image/z/65779-43-9.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%9A7.8%2A53.9%2B5.39%2A22%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%9A0.01%2B0.02%2B0.03%2B0.04%2B%C2%B7%C2%B7%C2%B70.97%2B0.98%2B0.99)
x){>eu
O6mS_[|{fYhYj[jRgg`
$@10>
,́|KaiTOexm~
=#Q e4@!M$1C<;_
用简便方法计算:7.8*53.9+5.39*22用简便方法计算:0.01+0.02+0.03+0.04+···0.97+0.98+0.99
用简便方法计算:7.8*53.9+5.39*22
用简便方法计算:0.01+0.02+0.03+0.04+···0.97+0.98+0.99
用简便方法计算:7.8*53.9+5.39*22用简便方法计算:0.01+0.02+0.03+0.04+···0.97+0.98+0.99
7.8*53.9+5.39*22
=7.8*53.9+53.9*2.2
=53.9*(7.8+2.2)
=53.9*10
=539