14 - 5 + 9 =, 15 - 7 + 8 =, 10 - 6 + 4 =, 18 - 9 + 9 =, 13 - 5 + 8 =, 9 - 2 + 7 =, 12 - 6 + 6 =, 17 - 8 + 9 =, 8 - 6 + 2 =, 9 - 4 + 5 =,

小一數學 - 加法

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