31 减法 20 等于多少？

31 - 20 = 11

31减法20 等于 11

竖式演算

31-2011

验算

  • 用加法验算：11 + 20 = 31

相关题目

31 - 19 = 12 31 - 21 = 10 31 - 22 = 9 31 - 18 = 13 31 - 23 = 8 31 - 17 = 14 31 - 24 = 7 31 - 16 = 15 30 - 20 = 10 32 - 20 = 12 29 - 20 = 9 33 - 20 = 13 34 - 20 = 14 28 - 20 = 8 35 - 20 = 15 27 - 20 = 7 12 - 1 = 11 13 - 2 = 11 14 - 3 = 11 15 - 4 = 11 16 - 5 = 11 17 - 6 = 11 98 - 88 = 10 17 - 11 = 6 53 - 30 = 23 77 - 27 = 50 71 - 60 = 11 57 - 5 = 52 1 + 10 = 11 5 + 6 = 11