7 加法 13 等于多少？

7 + 13 = 20

7加法13 等于 20

竖式演算

17+1320

验算

  • 用减法验算：20 − 13 = 7
  • 用减法验算：20 − 7 = 13

相关题目

7 + 12 = 19 7 + 14 = 21 7 + 11 = 18 7 + 15 = 22 7 + 10 = 17 7 + 16 = 23 7 + 17 = 24 7 + 9 = 16 6 + 13 = 19 8 + 13 = 21 5 + 13 = 18 9 + 13 = 22 4 + 13 = 17 10 + 13 = 23 11 + 13 = 24 3 + 13 = 16 1 + 19 = 20 2 + 18 = 20 3 + 17 = 20 4 + 16 = 20 5 + 15 = 20 6 + 14 = 20 25 + 59 = 84 63 + 42 = 105 69 + 70 = 139 62 + 60 = 122 93 + 41 = 134 33 + 80 = 113 4 × 5 = 20 28 - 8 = 20