2 加法 13 等于多少？

2 + 13 = 15

2加法13 等于 15

竖式演算

2+1315

验算

  • 用减法验算：15 − 13 = 2
  • 用减法验算：15 − 2 = 13

相关题目

2 + 12 = 14 2 + 14 = 16 2 + 11 = 13 2 + 15 = 17 2 + 10 = 12 2 + 16 = 18 2 + 17 = 19 2 + 9 = 11 1 + 13 = 14 3 + 13 = 16 4 + 13 = 17 5 + 13 = 18 6 + 13 = 19 7 + 13 = 20 8 + 13 = 21 9 + 13 = 22 1 + 14 = 15 3 + 12 = 15 4 + 11 = 15 5 + 10 = 15 6 + 9 = 15 7 + 8 = 15 36 + 13 = 49 6 + 80 = 86 21 + 47 = 68 31 + 21 = 52 70 + 24 = 94 43 + 31 = 74 31 - 16 = 15 65 - 50 = 15