28 加法 2 等于多少？

28 + 2 = 30

28加法2 等于 30

竖式演算

128+230

验算

  • 用减法验算：30 − 2 = 28
  • 用减法验算：30 − 28 = 2

相关题目

28 + 1 = 29 28 + 3 = 31 28 + 4 = 32 28 + 5 = 33 28 + 6 = 34 28 + 7 = 35 28 + 8 = 36 28 + 9 = 37 29 + 2 = 31 27 + 2 = 29 30 + 2 = 32 26 + 2 = 28 31 + 2 = 33 25 + 2 = 27 32 + 2 = 34 24 + 2 = 26 1 + 29 = 30 2 + 28 = 30 3 + 27 = 30 4 + 26 = 30 5 + 25 = 30 6 + 24 = 30 50 + 90 = 140 38 + 37 = 75 93 + 82 = 175 72 + 50 = 122 7 + 53 = 60 79 + 2 = 81 3 × 10 = 30 69 - 39 = 30