31 减法 10 等于多少？

31 - 10 = 21

31减法10 等于 21

竖式演算

31-1021

验算

  • 用加法验算：21 + 10 = 31

相关题目

31 - 11 = 20 31 - 9 = 22 31 - 12 = 19 31 - 8 = 23 31 - 13 = 18 31 - 7 = 24 31 - 14 = 17 31 - 6 = 25 30 - 10 = 20 32 - 10 = 22 29 - 10 = 19 33 - 10 = 23 28 - 10 = 18 34 - 10 = 24 35 - 10 = 25 27 - 10 = 17 22 - 1 = 21 23 - 2 = 21 24 - 3 = 21 25 - 4 = 21 26 - 5 = 21 27 - 6 = 21 45 - 22 = 23 72 - 42 = 30 99 - 77 = 22 57 - 12 = 45 76 - 5 = 71 99 - 40 = 59 3 + 18 = 21 6 + 15 = 21