28 减法 7 等于多少？

28 - 7 = 21

28减法7 等于 21

竖式演算

28-721

验算

  • 用加法验算：21 + 7 = 28

相关题目

28 - 6 = 22 28 - 8 = 20 28 - 5 = 23 28 - 9 = 19 28 - 4 = 24 28 - 10 = 18 28 - 11 = 17 28 - 3 = 25 27 - 7 = 20 29 - 7 = 22 26 - 7 = 19 30 - 7 = 23 25 - 7 = 18 31 - 7 = 24 32 - 7 = 25 24 - 7 = 17 22 - 1 = 21 23 - 2 = 21 24 - 3 = 21 25 - 4 = 21 26 - 5 = 21 27 - 6 = 21 58 - 2 = 56 48 - 47 = 1 75 - 64 = 11 85 - 72 = 13 61 - 21 = 40 85 - 20 = 65 20 + 1 = 21 12 + 9 = 21