15 加法 9 等于多少？

15 + 9 = 24

15加法9 等于 24

竖式演算

115+924

验算

  • 用减法验算：24 − 9 = 15
  • 用减法验算：24 − 15 = 9

相关题目

15 + 8 = 23 15 + 10 = 25 15 + 11 = 26 15 + 7 = 22 15 + 12 = 27 15 + 6 = 21 15 + 13 = 28 15 + 5 = 20 14 + 9 = 23 16 + 9 = 25 13 + 9 = 22 17 + 9 = 26 12 + 9 = 21 18 + 9 = 27 11 + 9 = 20 19 + 9 = 28 1 + 23 = 24 2 + 22 = 24 3 + 21 = 24 4 + 20 = 24 5 + 19 = 24 6 + 18 = 24 58 + 90 = 148 87 + 21 = 108 16 + 49 = 65 12 + 68 = 80 62 + 86 = 148 61 + 40 = 101 45 - 21 = 24 36 - 12 = 24