5 加法 15 等于多少？

5 + 15 = 20

5加法15 等于 20

竖式演算

15+1520

验算

  • 用减法验算：20 − 15 = 5
  • 用减法验算：20 − 5 = 15

相关题目

5 + 14 = 19 5 + 16 = 21 5 + 13 = 18 5 + 17 = 22 5 + 12 = 17 5 + 18 = 23 5 + 11 = 16 5 + 19 = 24 4 + 15 = 19 6 + 15 = 21 3 + 15 = 18 7 + 15 = 22 2 + 15 = 17 8 + 15 = 23 1 + 15 = 16 9 + 15 = 24 1 + 19 = 20 2 + 18 = 20 3 + 17 = 20 4 + 16 = 20 6 + 14 = 20 7 + 13 = 20 39 + 56 = 95 66 + 71 = 137 38 + 48 = 86 29 + 67 = 96 23 + 38 = 61 50 + 99 = 149 49 - 29 = 20 61 - 41 = 20