7 加法 24 等于多少？

7 + 24 = 31

7加法24 等于 31

竖式演算

17+2431

验算

  • 用减法验算：31 − 24 = 7
  • 用减法验算：31 − 7 = 24

相关题目

7 + 23 = 30 7 + 25 = 32 7 + 22 = 29 7 + 26 = 33 7 + 21 = 28 7 + 27 = 34 7 + 20 = 27 7 + 28 = 35 6 + 24 = 30 8 + 24 = 32 5 + 24 = 29 9 + 24 = 33 4 + 24 = 28 10 + 24 = 34 11 + 24 = 35 3 + 24 = 27 1 + 30 = 31 2 + 29 = 31 3 + 28 = 31 4 + 27 = 31 5 + 26 = 31 6 + 25 = 31 2 + 8 = 10 8 + 7 = 15 58 + 17 = 75 17 + 15 = 32 50 + 63 = 113 41 + 94 = 135 74 - 43 = 31 90 - 59 = 31