20 加法 8 等于多少？

20 + 8 = 28

20加法8 等于 28

竖式演算

20+828

验算

  • 用减法验算：28 − 8 = 20
  • 用减法验算：28 − 20 = 8

相关题目

20 + 7 = 27 20 + 9 = 29 20 + 6 = 26 20 + 10 = 30 20 + 11 = 31 20 + 5 = 25 20 + 12 = 32 20 + 4 = 24 19 + 8 = 27 21 + 8 = 29 22 + 8 = 30 18 + 8 = 26 23 + 8 = 31 17 + 8 = 25 24 + 8 = 32 16 + 8 = 24 1 + 27 = 28 2 + 26 = 28 3 + 25 = 28 4 + 24 = 28 5 + 23 = 28 6 + 22 = 28 60 + 24 = 84 8 + 100 = 108 40 + 4 = 44 15 + 30 = 45 1 + 74 = 75 43 + 56 = 99 70 - 42 = 28 38 - 10 = 28