在①
,②
,③
,④
,⑤
,⑥
中,是代数式的有___________ .(只填番号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1d2e5599453f8d4c04369bc8f79962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1c732804db0d7ca647f36a41c102ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b721cb8bc6ee7f5148b244ba0544a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab28a424cb5ba7072dcb5c565816ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
19-20七年级上·四川内江·期中 查看更多[4]
四川省威远县向义中学2019—2020学年七年级上学期期中数学试题(已下线)专题2.1 代数式(知识讲解)-2022-2023学年七年级数学上册基础知识专项讲练(人教版)(已下线)专题3.1 代数式(知识讲解)-2022-2023学年七年级数学上册基础知识专项讲练(北师大版)3.2.1代数式(课前练)
更新时间:2020-10-27 02:17:17
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【推荐1】下列式子中
a+b,S=
ab,5m,21+y,m+3=2,0中,代数式有_______ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐2】已知下列各式:①
,②8,③
,④
,⑤
,⑥
,
⑦
,⑧
,⑨
,⑩
,其中代数式有_______ (填写序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cd71ad57b7bd04c3fa74bd963a8c1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d43ce7c852ffd312d4c87c17e6c4845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dda8b535e30840b556643ed79d1b96e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8469d348cd31a3a1429e0828954d6164.png)
⑦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb31978918a3f8431cbc0f2ae4ac82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247ee91ff275169aa10ef104d580bdab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9a9a734ab83a69bc2d02a3cd8884fb.png)
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