5 + 2 = ___, 4 + 5 = ___, 3 + 5 = ___, 6 + 2 = ___, 4 + 4 = ___, 5 - 3 = ___, 8 - 6 = ___, 4 - 3 = ___, 7 - 5 = ___, 2 - 0 = ___.

Add/Subtract within 10

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恢復自動保存: ?