31 减法 19 等于多少？

31 - 19 = 12

31减法19 等于 12

竖式演算

21131-1912

验算

  • 用加法验算：12 + 19 = 31

相关题目

31 - 20 = 11 31 - 18 = 13 31 - 21 = 10 31 - 17 = 14 31 - 22 = 9 31 - 16 = 15 31 - 23 = 8 31 - 15 = 16 30 - 19 = 11 32 - 19 = 13 29 - 19 = 10 33 - 19 = 14 28 - 19 = 9 34 - 19 = 15 35 - 19 = 16 27 - 19 = 8 13 - 1 = 12 14 - 2 = 12 15 - 3 = 12 16 - 4 = 12 17 - 5 = 12 18 - 6 = 12 75 - 59 = 16 90 - 75 = 15 71 - 62 = 9 75 - 39 = 36 52 - 47 = 5 50 - 5 = 45 7 + 5 = 12 5 + 7 = 12