题型:填空题 题类:常考题 难易度:容易
20以内的进位加法和退位减法522(10题)
14-4=
16 | 13 | 10 | 9 | 12 | 11 | 14 | 8 | 7 | 6 |
3 | 6 | 9 | 7 | 2 | 8 | 5 | 6 | 5 | 3 |
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