13 加法 15 等于多少？

13 + 15 = 28

13加法15 等于 28

竖式演算

13+1528

验算

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

相关题目

13 + 14 = 27 13 + 16 = 29 13 + 13 = 26 13 + 17 = 30 13 + 12 = 25 13 + 18 = 31 13 + 11 = 24 13 + 19 = 32 12 + 15 = 27 14 + 15 = 29 11 + 15 = 26 15 + 15 = 30 10 + 15 = 25 16 + 15 = 31 17 + 15 = 32 9 + 15 = 24 1 + 27 = 28 2 + 26 = 28 3 + 25 = 28 4 + 24 = 28 5 + 23 = 28 6 + 22 = 28 41 + 57 = 98 22 + 40 = 62 43 + 13 = 56 8 + 20 = 28 21 + 64 = 85 66 + 12 = 78 38 - 10 = 28 2 × 14 = 28