31 减法 13 等于多少？

31 - 13 = 18

31减法13 等于 18

竖式演算

21131-1318

验算

  • 用加法验算：18 + 13 = 31

相关题目

31 - 12 = 19 31 - 14 = 17 31 - 11 = 20 31 - 15 = 16 31 - 10 = 21 31 - 16 = 15 31 - 17 = 14 31 - 9 = 22 32 - 13 = 19 30 - 13 = 17 33 - 13 = 20 29 - 13 = 16 34 - 13 = 21 28 - 13 = 15 35 - 13 = 22 27 - 13 = 14 19 - 1 = 18 20 - 2 = 18 21 - 3 = 18 22 - 4 = 18 23 - 5 = 18 24 - 6 = 18 54 - 25 = 29 31 - 7 = 24 72 - 25 = 47 92 - 38 = 54 70 - 54 = 16 24 - 18 = 6 17 + 1 = 18 3 + 15 = 18