9 + 2 = 8 + 3 = 7 + 4 = 6 + 5 = 5 + 6 = 4 + 7 = 3 + 8 = 2 + 9 = 9 + 3 = 8 + 4 = 7 + 5 = 6 + 6 = 5 + 7 = 4 + 8 = 3 + 9 = 9 + 4 = 8 + 5 = 7 + 6 = 6 + 7 = 5 + 8 = 4 + 9 = 9 + 5 = 8 + 6 = 7 + 7 = 6 + 8 = 5 + 9 = 9 + 6 = 8 + 7 = 7 + 8 = 6 + 9 = 9 + 7 = 8 + 8 = 7 + 9 = 9 + 8 = 8 + 9 = 9 + 9 = 20以内退位减法表(有答案版)
11 - 9 = 11 - 8 = 11 - 7 = 11 - 6 = 11 - 5 = 11 - 4 = 11 - 3 = 11 - 2 = 12 - 9 = 12 - 8 = 12 - 7 = 12 - 6 = 12 - 5 = 12 - 4 = 12 - 3 = 13 - 9 = 13 - 8 = 13 - 7 = 13 - 6 = 13 - 5 = 13 - 4 = 14 - 9 = 14 - 8 = 14 - 7 = 14 - 6 = 14 - 5 = 15 - 9 = 15 - 8 = 15 - 7 = 15 - 6 = 16 - 9 = 16 - 8 = 16 - 7 = 17 - 9 = 17 - 8 = 18 - 9 = 20以内进位加退位减法 2+9 11—9 12—9 13—9 14—9 15—9 16—9 17—9 18—9
3+9 3+8 11—8 12—8 13—8 14—8 15—8 16—8 17—8 4+9 4+8 4+7 11—7 12—7 13—7 14—7 15—7 16—7 5+9 5+8 5+7 5+6 11—6 12—6 13—6 14—6 15—6 6+9 6+8 6+7 6+6 6+5 11—5 12—5 13—5 14—5 7+9 7+8 7+7 7+6 7+5 7+4 11—4 12—4 13—4 8+9 8+8 8+7 8+6 8+5 8+4 8+3 11—3 12—3 9+9 9+8 9+7 9+6 9+5 9+4 9+3 9+2 11—2
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