28 加法 1 等于多少？

28 + 1 = 29

28加法1 等于 29

竖式演算

28+129

验算

  • 用减法验算：29 − 1 = 28
  • 用减法验算：29 − 28 = 1

相关题目

28 + 2 = 30 28 + 3 = 31 28 + 4 = 32 28 + 5 = 33 28 + 6 = 34 28 + 7 = 35 28 + 8 = 36 28 + 9 = 37 29 + 1 = 30 27 + 1 = 28 30 + 1 = 31 26 + 1 = 27 31 + 1 = 32 25 + 1 = 26 32 + 1 = 33 24 + 1 = 25 1 + 28 = 29 2 + 27 = 29 3 + 26 = 29 4 + 25 = 29 5 + 24 = 29 6 + 23 = 29 1 + 1 = 2 57 + 41 = 98 32 + 65 = 97 23 + 30 = 53 40 + 3 = 43 11 + 33 = 44 45 - 16 = 29 62 - 33 = 29