用简便方法计算:9.75+99.5+999.75+9999.75
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 19:32:07
![用简便方法计算:9.75+99.5+999.75+9999.75](/uploads/image/z/631162-10-2.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%9A9.75%2B99.5%2B999.75%2B9999.75)
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用简便方法计算:9.75+99.5+999.75+9999.75
用简便方法计算:9.75+99.5+999.75+9999.75
用简便方法计算:9.75+99.5+999.75+9999.75
9.75+99.5+999.75+9999.75
=10-0.25+100-0.25+1000-0.25+10000-0.25
=11110-0.25*4
=11110-1
=11109