42 减法 21 等于多少？

42 - 21 = 21

42减法21 等于 21

竖式演算

42-2121

验算

  • 用加法验算：21 + 21 = 42

相关题目

42 - 20 = 22 42 - 22 = 20 42 - 19 = 23 42 - 23 = 19 42 - 24 = 18 42 - 18 = 24 42 - 25 = 17 42 - 17 = 25 41 - 21 = 20 43 - 21 = 22 40 - 21 = 19 44 - 21 = 23 39 - 21 = 18 45 - 21 = 24 46 - 21 = 25 38 - 21 = 17 22 - 1 = 21 23 - 2 = 21 24 - 3 = 21 25 - 4 = 21 26 - 5 = 21 27 - 6 = 21 49 - 18 = 31 83 - 3 = 80 9 - 2 = 7 97 - 80 = 17 92 - 2 = 90 22 - 21 = 1 12 + 9 = 21 5 + 16 = 21