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 70 + 42 = 112 51 + 39 = 90 86 + 6 = 92 21 + 91 = 112 55 + 60 = 115 15 + 91 = 106 61 - 21 = 40 56 - 16 = 40