40 减法 19 等于多少？

40 - 19 = 21

40减法19 等于 21

竖式演算

31040-1921

验算

  • 用加法验算：21 + 19 = 40

相关题目

40 - 20 = 20 40 - 18 = 22 40 - 21 = 19 40 - 17 = 23 40 - 22 = 18 40 - 16 = 24 40 - 23 = 17 40 - 15 = 25 39 - 19 = 20 41 - 19 = 22 38 - 19 = 19 42 - 19 = 23 37 - 19 = 18 43 - 19 = 24 44 - 19 = 25 36 - 19 = 17 22 - 1 = 21 23 - 2 = 21 24 - 3 = 21 25 - 4 = 21 26 - 5 = 21 27 - 6 = 21 96 - 87 = 9 90 - 81 = 9 80 - 24 = 56 91 - 17 = 74 96 - 28 = 68 55 - 48 = 7 1 + 20 = 21 8 + 13 = 21