15 加法 5 等于多少？

15 + 5 = 20

15加法5 等于 20

竖式演算

115+520

验算

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

相关题目

15 + 4 = 19 15 + 6 = 21 15 + 3 = 18 15 + 7 = 22 15 + 2 = 17 15 + 8 = 23 15 + 1 = 16 15 + 9 = 24 14 + 5 = 19 16 + 5 = 21 13 + 5 = 18 17 + 5 = 22 12 + 5 = 17 18 + 5 = 23 11 + 5 = 16 19 + 5 = 24 1 + 19 = 20 2 + 18 = 20 3 + 17 = 20 4 + 16 = 20 5 + 15 = 20 6 + 14 = 20 77 + 15 = 92 29 + 2 = 31 33 + 71 = 104 61 + 54 = 115 6 + 36 = 42 63 + 44 = 107 52 - 32 = 20 1 × 20 = 20