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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463(10题)
8 + 4 = 7 + 5 = 7 + 6 = 7 + 8 = 6 + 8 =
5 + 7 = 6 + 7 = 8 + 7 = 7 + 7 = 7 + 9 =
3+9=
7+6=
8+5=
9+9=
4+7=
6+6=
6+9=
8+4=
3+8=
7+7=
2+9=
5+7=
8
10
2
9
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