1 加法 30 等于多少？

1 + 30 = 31

1加法30 等于 31

竖式演算

1+3031

验算

  • 用减法验算：31 − 30 = 1
  • 用减法验算：31 − 1 = 30

相关题目

1 + 29 = 30 1 + 31 = 32 1 + 28 = 29 1 + 32 = 33 1 + 33 = 34 1 + 27 = 28 1 + 34 = 35 1 + 26 = 27 2 + 30 = 32 3 + 30 = 33 4 + 30 = 34 5 + 30 = 35 6 + 30 = 36 7 + 30 = 37 8 + 30 = 38 9 + 30 = 39 2 + 29 = 31 3 + 28 = 31 4 + 27 = 31 5 + 26 = 31 6 + 25 = 31 7 + 24 = 31 27 + 50 = 77 39 + 50 = 89 62 + 11 = 73 31 + 10 = 41 20 + 3 = 23 25 + 11 = 36 66 - 35 = 31 46 - 15 = 31