57 加法 20 等于多少？

57 + 20 = 77

57加法20 等于 77

竖式演算

57+2077

验算

  • 用减法验算：77 − 20 = 57
  • 用减法验算：77 − 57 = 20

相关题目

57 + 19 = 76 57 + 21 = 78 57 + 22 = 79 57 + 18 = 75 57 + 23 = 80 57 + 17 = 74 57 + 24 = 81 57 + 16 = 73 56 + 20 = 76 58 + 20 = 78 55 + 20 = 75 59 + 20 = 79 60 + 20 = 80 54 + 20 = 74 61 + 20 = 81 53 + 20 = 73 1 + 76 = 77 2 + 75 = 77 3 + 74 = 77 4 + 73 = 77 5 + 72 = 77 6 + 71 = 77 47 + 40 = 87 62 + 10 = 72 42 + 15 = 57 32 + 34 = 66 14 + 54 = 68 53 + 46 = 99 100 - 23 = 77 96 - 19 = 77