12 加法 28 等于多少？

12 + 28 = 40

12加法28 等于 40

竖式演算

112+2840

验算

  • 用减法验算：40 − 28 = 12
  • 用减法验算：40 − 12 = 28

相关题目

12 + 29 = 41 12 + 27 = 39 12 + 30 = 42 12 + 26 = 38 12 + 31 = 43 12 + 25 = 37 12 + 32 = 44 12 + 24 = 36 11 + 28 = 39 13 + 28 = 41 10 + 28 = 38 14 + 28 = 42 15 + 28 = 43 9 + 28 = 37 16 + 28 = 44 8 + 28 = 36 1 + 39 = 40 2 + 38 = 40 3 + 37 = 40 4 + 36 = 40 5 + 35 = 40 6 + 34 = 40 81 + 33 = 114 38 + 33 = 71 9 + 52 = 61 85 + 31 = 116 51 + 66 = 117 80 + 56 = 136 8 × 5 = 40 71 - 31 = 40