2 加法 18 等于多少？

2 + 18 = 20

2加法18 等于 20

竖式演算

12+1820

验算

  • 用减法验算：20 − 18 = 2
  • 用减法验算：20 − 2 = 18

相关题目

2 + 17 = 19 2 + 19 = 21 2 + 20 = 22 2 + 16 = 18 2 + 21 = 23 2 + 15 = 17 2 + 22 = 24 2 + 14 = 16 1 + 18 = 19 3 + 18 = 21 4 + 18 = 22 5 + 18 = 23 6 + 18 = 24 7 + 18 = 25 8 + 18 = 26 9 + 18 = 27 1 + 19 = 20 3 + 17 = 20 4 + 16 = 20 5 + 15 = 20 6 + 14 = 20 7 + 13 = 20 66 + 62 = 128 93 + 31 = 124 82 + 21 = 103 28 + 9 = 37 22 + 18 = 40 61 + 91 = 152 67 - 47 = 20 41 - 21 = 20