2 加法 15 等于多少？

2 + 15 = 17

2加法15 等于 17

竖式演算

2+1517

验算

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

相关题目

2 + 14 = 16 2 + 16 = 18 2 + 13 = 15 2 + 17 = 19 2 + 12 = 14 2 + 18 = 20 2 + 11 = 13 2 + 19 = 21 1 + 15 = 16 3 + 15 = 18 4 + 15 = 19 5 + 15 = 20 6 + 15 = 21 7 + 15 = 22 8 + 15 = 23 9 + 15 = 24 1 + 16 = 17 3 + 14 = 17 4 + 13 = 17 5 + 12 = 17 6 + 11 = 17 7 + 10 = 17 7 + 41 = 48 1 + 55 = 56 11 + 67 = 78 21 + 100 = 121 30 + 55 = 85 24 + 50 = 74 69 - 52 = 17 82 - 65 = 17