21 减法 17 等于多少？

21 - 17 = 4

21减法17 等于 4

竖式演算

11121-174

验算

  • 用加法验算：4 + 17 = 21

相关题目

21 - 16 = 5 21 - 18 = 3 21 - 15 = 6 21 - 19 = 2 21 - 14 = 7 21 - 20 = 1 21 - 13 = 8 21 - 21 = 0 20 - 17 = 3 22 - 17 = 5 19 - 17 = 2 23 - 17 = 6 18 - 17 = 1 24 - 17 = 7 17 - 17 = 0 25 - 17 = 8 5 - 1 = 4 6 - 2 = 4 7 - 3 = 4 8 - 4 = 4 9 - 5 = 4 10 - 6 = 4 83 - 54 = 29 40 - 11 = 29 72 - 65 = 7 44 - 15 = 29 20 - 11 = 9 92 - 13 = 79 3 + 1 = 4 2 × 2 = 4