一年级数学20以内加减法--凑十法计算题

一年级数学20以内加减法--凑十法计算题


简介:
8 + 4 = 7 + 6 = 6 + 6 = 9 + 6 = 6 + 5 = 8 + 6 = 9 + 8 = 8 + 5 = 9 + 4 = 9 + 2 = 8 + 5 = 7 + 4 = 8 + 7 = 7 + 7 = 9 + 2 = 8 + 6 =