31 减法 12 等于多少？

31 - 12 = 19

31减法12 等于 19

竖式演算

21131-1219

验算

  • 用加法验算：19 + 12 = 31

相关题目

31 - 11 = 20 31 - 13 = 18 31 - 10 = 21 31 - 14 = 17 31 - 15 = 16 31 - 9 = 22 31 - 16 = 15 31 - 8 = 23 30 - 12 = 18 32 - 12 = 20 33 - 12 = 21 29 - 12 = 17 34 - 12 = 22 28 - 12 = 16 35 - 12 = 23 27 - 12 = 15 20 - 1 = 19 21 - 2 = 19 22 - 3 = 19 23 - 4 = 19 24 - 5 = 19 25 - 6 = 19 82 - 28 = 54 25 - 17 = 8 93 - 9 = 84 10 - 3 = 7 75 - 67 = 8 73 - 54 = 19 15 + 4 = 19 4 + 15 = 19