27 加法 15 等于多少？

27 + 15 = 42

27加法15 等于 42

竖式演算

127+1542

验算

  • 用减法验算：42 − 15 = 27
  • 用减法验算：42 − 27 = 15

相关题目

27 + 14 = 41 27 + 16 = 43 27 + 13 = 40 27 + 17 = 44 27 + 12 = 39 27 + 18 = 45 27 + 11 = 38 27 + 19 = 46 26 + 15 = 41 28 + 15 = 43 29 + 15 = 44 25 + 15 = 40 30 + 15 = 45 24 + 15 = 39 31 + 15 = 46 23 + 15 = 38 1 + 41 = 42 2 + 40 = 42 3 + 39 = 42 4 + 38 = 42 5 + 37 = 42 6 + 36 = 42 22 + 49 = 71 67 + 8 = 75 42 + 87 = 129 93 + 72 = 165 62 + 76 = 138 28 + 44 = 72 79 - 37 = 42 43 - 1 = 42