31 减法 30 等于多少？

31 - 30 = 1

31减法30 等于 1

竖式演算

31-301

验算

  • 用加法验算：1 + 30 = 31

相关题目

31 - 29 = 2 31 - 31 = 0 31 - 28 = 3 31 - 27 = 4 31 - 26 = 5 31 - 25 = 6 31 - 24 = 7 31 - 23 = 8 30 - 30 = 0 32 - 30 = 2 33 - 30 = 3 34 - 30 = 4 35 - 30 = 5 36 - 30 = 6 37 - 30 = 7 38 - 30 = 8 2 - 1 = 1 3 - 2 = 1 4 - 3 = 1 5 - 4 = 1 6 - 5 = 1 7 - 6 = 1 48 - 47 = 1 95 - 34 = 61 76 - 26 = 50 98 - 6 = 92 76 - 72 = 4 73 - 1 = 72 1 × 1 = 1 61 - 41 = 20