21 减法 12 等于多少？

21 - 12 = 9

21减法12 等于 9

竖式演算

11121-129

验算

  • 用加法验算：9 + 12 = 21

相关题目

21 - 11 = 10 21 - 13 = 8 21 - 10 = 11 21 - 14 = 7 21 - 9 = 12 21 - 15 = 6 21 - 8 = 13 21 - 16 = 5 22 - 12 = 10 20 - 12 = 8 23 - 12 = 11 19 - 12 = 7 24 - 12 = 12 18 - 12 = 6 25 - 12 = 13 17 - 12 = 5 10 - 1 = 9 11 - 2 = 9 12 - 3 = 9 13 - 4 = 9 14 - 5 = 9 15 - 6 = 9 77 - 29 = 48 51 - 23 = 28 55 - 28 = 27 50 - 33 = 17 70 - 62 = 8 70 - 23 = 47 6 + 3 = 9 1 + 8 = 9