同分母分數的加法
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同分母分数的加法
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Transcript of 同分母分數的加法
![Page 1: 同分母分數的加法](https://reader035.fdocument.pub/reader035/viewer/2022081209/55a7793f1a28ab5e0a8b493b/html5/thumbnails/1.jpg)
同分母分数的加法
![Page 2: 同分母分數的加法](https://reader035.fdocument.pub/reader035/viewer/2022081209/55a7793f1a28ab5e0a8b493b/html5/thumbnails/2.jpg)
1 盒冰棒有 12 枝, 姐姐有 盒,妹妹
有 盒,她们共有多少盒 ?12
8
12
7
先把题目看清楚 !
盒
盒
12
7
12
8
按我按我
12
8 盒
12
7 盒
![Page 3: 同分母分數的加法](https://reader035.fdocument.pub/reader035/viewer/2022081209/55a7793f1a28ab5e0a8b493b/html5/thumbnails/3.jpg)
12
8
12
7
用算式記下來
12
8 盒 12
7 盒12
1
盒12
1
盒12
1
盒12
1
盒
12
1
盒12
1
盒12
1
盒12
1
盒
+ =
12
1
盒12
1
盒
12
1
盒12
1
盒
12
1
盒12
1
盒12
1
盒
共有 15 個12
1所以是 12
15
12
15
![Page 4: 同分母分數的加法](https://reader035.fdocument.pub/reader035/viewer/2022081209/55a7793f1a28ab5e0a8b493b/html5/thumbnails/4.jpg)
12
8
12
7
用算式記下來
12
1
盒12
1
盒12
1
盒12
1
盒
12
1
盒12
1
盒12
1
盒12
1
盒
+ =
12
1
盒12
1
盒
12
1
盒12
1
盒
12
1
盒12
1
盒12
1
盒
共有 15 個12
1所以是
12
15
12
15
也可以寫成12
31
12
312
12= 1
=12
31
答 : 兩人共有 盒12
31