31 减法 21 等于多少？

31 - 21 = 10

31减法21 等于 10

竖式演算

31-2110

验算

  • 用加法验算：10 + 21 = 31

相关题目

31 - 20 = 11 31 - 22 = 9 31 - 19 = 12 31 - 23 = 8 31 - 24 = 7 31 - 18 = 13 31 - 25 = 6 31 - 17 = 14 30 - 21 = 9 32 - 21 = 11 33 - 21 = 12 29 - 21 = 8 34 - 21 = 13 28 - 21 = 7 35 - 21 = 14 27 - 21 = 6 11 - 1 = 10 12 - 2 = 10 13 - 3 = 10 14 - 4 = 10 15 - 5 = 10 16 - 6 = 10 76 - 10 = 66 98 - 64 = 34 47 - 21 = 26 49 - 45 = 4 78 - 4 = 74 13 - 12 = 1 3 + 7 = 10 7 + 3 = 10