题目内容
1-
=______
______个______减______个
,剩______个
,就是
.
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| 3 |
______个______减______个
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| 3 |
| 1 |
| 3 |
| () |
| () |
3个
减2个
,剩1个
,就是
.
故答案为:3,
,2,1,
.
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| 3 |
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| 3 |
故答案为:3,
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