3 加法 15 等于多少？

3 + 15 = 18

3加法15 等于 18

竖式演算

3+1518

验算

  • 用减法验算：18 − 15 = 3
  • 用减法验算：18 − 3 = 15

相关题目

3 + 14 = 17 3 + 16 = 19 3 + 13 = 16 3 + 17 = 20 3 + 12 = 15 3 + 18 = 21 3 + 11 = 14 3 + 19 = 22 2 + 15 = 17 4 + 15 = 19 1 + 15 = 16 5 + 15 = 20 6 + 15 = 21 7 + 15 = 22 8 + 15 = 23 9 + 15 = 24 1 + 17 = 18 2 + 16 = 18 4 + 14 = 18 5 + 13 = 18 6 + 12 = 18 7 + 11 = 18 92 + 1 = 93 11 + 43 = 54 21 + 18 = 39 3 + 86 = 89 50 + 42 = 92 100 + 71 = 171 63 - 45 = 18 90 - 72 = 18