31 减法 18 等于多少？

31 - 18 = 13

31减法18 等于 13

竖式演算

21131-1813

验算

  • 用加法验算：13 + 18 = 31

相关题目

31 - 17 = 14 31 - 19 = 12 31 - 20 = 11 31 - 16 = 15 31 - 21 = 10 31 - 15 = 16 31 - 22 = 9 31 - 14 = 17 30 - 18 = 12 32 - 18 = 14 29 - 18 = 11 33 - 18 = 15 28 - 18 = 10 34 - 18 = 16 27 - 18 = 9 35 - 18 = 17 14 - 1 = 13 15 - 2 = 13 16 - 3 = 13 17 - 4 = 13 18 - 5 = 13 19 - 6 = 13 90 - 53 = 37 94 - 58 = 36 72 - 7 = 65 42 - 9 = 33 31 - 5 = 26 50 - 46 = 4 4 + 9 = 13 11 + 2 = 13