15 加法 13 等于多少？

15 + 13 = 28

15加法13 等于 28

竖式演算

15+1328

验算

  • 用减法验算：28 − 13 = 15
  • 用减法验算：28 − 15 = 13

相关题目

15 + 12 = 27 15 + 14 = 29 15 + 11 = 26 15 + 15 = 30 15 + 10 = 25 15 + 16 = 31 15 + 17 = 32 15 + 9 = 24 14 + 13 = 27 16 + 13 = 29 13 + 13 = 26 17 + 13 = 30 12 + 13 = 25 18 + 13 = 31 11 + 13 = 24 19 + 13 = 32 1 + 27 = 28 2 + 26 = 28 3 + 25 = 28 4 + 24 = 28 5 + 23 = 28 6 + 22 = 28 51 + 47 = 98 85 + 11 = 96 71 + 26 = 97 57 + 41 = 98 81 + 4 = 85 10 + 26 = 36 52 - 24 = 28 85 - 57 = 28