7 加法 2 等于多少？

7 + 2 = 9

7加法2 等于 9

竖式演算

7+29

验算

  • 用减法验算：9 − 2 = 7
  • 用减法验算：9 − 7 = 2

相关题目

7 + 1 = 8 7 + 3 = 10 7 + 4 = 11 7 + 5 = 12 7 + 6 = 13 7 + 7 = 14 7 + 8 = 15 7 + 9 = 16 6 + 2 = 8 8 + 2 = 10 5 + 2 = 7 9 + 2 = 11 4 + 2 = 6 10 + 2 = 12 11 + 2 = 13 3 + 2 = 5 1 + 8 = 9 2 + 7 = 9 3 + 6 = 9 4 + 5 = 9 5 + 4 = 9 6 + 3 = 9 31 + 28 = 59 44 + 11 = 55 7 + 72 = 79 52 + 40 = 92 1 + 62 = 63 32 + 15 = 47 82 - 73 = 9 85 - 76 = 9