1 1 1 1 1—— + —— + —— + —— + ——2 6 12 20 30注意:能简便计算就简便计算,最好别通分!如果不好简便计算,就通分算!是2分之1,6分之1,12分之1,20分之1和30分之1!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 08:42:12
![1 1 1 1 1—— + —— + —— + —— + ——2 6 12 20 30注意:能简便计算就简便计算,最好别通分!如果不好简便计算,就通分算!是2分之1,6分之1,12分之1,20分之1和30分之1!](/uploads/image/z/14347152-0-2.jpg?t=1+1+1+1+1%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%942+6+12+20+30%E6%B3%A8%E6%84%8F%EF%BC%9A%E8%83%BD%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E5%B0%B1%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2C%E6%9C%80%E5%A5%BD%E5%88%AB%E9%80%9A%E5%88%86%21%E5%A6%82%E6%9E%9C%E4%B8%8D%E5%A5%BD%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2C%E5%B0%B1%E9%80%9A%E5%88%86%E7%AE%97%21%E6%98%AF2%E5%88%86%E4%B9%8B1%EF%BC%8C6%E5%88%86%E4%B9%8B1%EF%BC%8C12%E5%88%86%E4%B9%8B1%EF%BC%8C20%E5%88%86%E4%B9%8B1%E5%92%8C30%E5%88%86%E4%B9%8B1%EF%BC%81)
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