28 加法 20 等于多少？

28 + 20 = 48

28加法20 等于 48

竖式演算

28+2048

验算

  • 用减法验算：48 − 20 = 28
  • 用减法验算：48 − 28 = 20

相关题目

28 + 19 = 47 28 + 21 = 49 28 + 22 = 50 28 + 18 = 46 28 + 23 = 51 28 + 17 = 45 28 + 24 = 52 28 + 16 = 44 29 + 20 = 49 27 + 20 = 47 30 + 20 = 50 26 + 20 = 46 31 + 20 = 51 25 + 20 = 45 32 + 20 = 52 24 + 20 = 44 1 + 47 = 48 2 + 46 = 48 3 + 45 = 48 4 + 44 = 48 5 + 43 = 48 6 + 42 = 48 22 + 52 = 74 57 + 21 = 78 13 + 42 = 55 37 + 11 = 48 19 + 80 = 99 35 + 33 = 68 57 - 9 = 48 84 - 36 = 48