31 加法 12 等于多少？

31 + 12 = 43

31加法12 等于 43

竖式演算

31+1243

验算

  • 用减法验算：43 − 12 = 31
  • 用减法验算：43 − 31 = 12

相关题目

31 + 11 = 42 31 + 13 = 44 31 + 10 = 41 31 + 14 = 45 31 + 15 = 46 31 + 9 = 40 31 + 16 = 47 31 + 8 = 39 30 + 12 = 42 32 + 12 = 44 29 + 12 = 41 33 + 12 = 45 28 + 12 = 40 34 + 12 = 46 35 + 12 = 47 27 + 12 = 39 1 + 42 = 43 2 + 41 = 43 3 + 40 = 43 4 + 39 = 43 5 + 38 = 43 6 + 37 = 43 81 + 4 = 85 79 + 10 = 89 61 + 8 = 69 50 + 49 = 99 60 + 7 = 67 99 - 56 = 43 84 - 41 = 43 90 - 47 = 43