28 加法 12 等于多少？

28 + 12 = 40

28加法12 等于 40

竖式演算

128+1240

验算

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

相关题目

28 + 11 = 39 28 + 13 = 41 28 + 10 = 38 28 + 14 = 42 28 + 15 = 43 28 + 9 = 37 28 + 16 = 44 28 + 8 = 36 29 + 12 = 41 27 + 12 = 39 30 + 12 = 42 26 + 12 = 38 31 + 12 = 43 25 + 12 = 37 32 + 12 = 44 24 + 12 = 36 1 + 39 = 40 2 + 38 = 40 3 + 37 = 40 4 + 36 = 40 5 + 35 = 40 6 + 34 = 40 8 + 36 = 44 36 + 24 = 60 8 + 45 = 53 70 + 31 = 101 39 + 49 = 88 49 + 35 = 84 75 - 35 = 40 42 - 2 = 40