15 加法 2 等于多少？

15 + 2 = 17

15加法2 等于 17

竖式演算

15+217

验算

  • 用减法验算：17 − 2 = 15
  • 用减法验算：17 − 15 = 2

相关题目

15 + 1 = 16 15 + 3 = 18 15 + 4 = 19 15 + 5 = 20 15 + 6 = 21 15 + 7 = 22 15 + 8 = 23 15 + 9 = 24 14 + 2 = 16 16 + 2 = 18 13 + 2 = 15 17 + 2 = 19 12 + 2 = 14 18 + 2 = 20 11 + 2 = 13 19 + 2 = 21 1 + 16 = 17 2 + 15 = 17 3 + 14 = 17 4 + 13 = 17 5 + 12 = 17 6 + 11 = 17 47 + 50 = 97 32 + 24 = 56 13 + 20 = 33 5 + 93 = 98 20 + 42 = 62 16 + 3 = 19 84 - 67 = 17 61 - 44 = 17