21 减法 8 等于多少？

21 - 8 = 13

21减法8 等于 13

竖式演算

11121-813

验算

  • 用加法验算：13 + 8 = 21

相关题目

21 - 7 = 14 21 - 9 = 12 21 - 6 = 15 21 - 10 = 11 21 - 5 = 16 21 - 11 = 10 21 - 4 = 17 21 - 12 = 9 20 - 8 = 12 22 - 8 = 14 19 - 8 = 11 23 - 8 = 15 18 - 8 = 10 24 - 8 = 16 17 - 8 = 9 25 - 8 = 17 14 - 1 = 13 15 - 2 = 13 16 - 3 = 13 17 - 4 = 13 18 - 5 = 13 19 - 6 = 13 94 - 68 = 26 34 - 19 = 15 20 - 5 = 15 55 - 7 = 48 93 - 55 = 38 84 - 47 = 37 5 + 8 = 13 11 + 2 = 13