简便计算67+33*19-19
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 03:50:26
![简便计算67+33*19-19](/uploads/image/z/343702-46-2.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%9767%2B33%2A19-19)
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简便计算67+33*19-19
简便计算67+33*19-19
简便计算67+33*19-19
67+33×19-19
=34+33+33×19-19
=34+33×(1+19)-19
=34-19+33×20
=15+660
=675
67+33×19—19 =67+627-19=~~~~`自己算
原式=67+32×19
=67+32×20-32
=640+35
=675