15 加法 30 等于多少？

15 + 30 = 45

15加法30 等于 45

竖式演算

15+3045

验算

  • 用减法验算：45 − 30 = 15
  • 用减法验算：45 − 15 = 30

相关题目

15 + 29 = 44 15 + 31 = 46 15 + 28 = 43 15 + 32 = 47 15 + 33 = 48 15 + 27 = 42 15 + 34 = 49 15 + 26 = 41 14 + 30 = 44 16 + 30 = 46 13 + 30 = 43 17 + 30 = 47 12 + 30 = 42 18 + 30 = 48 11 + 30 = 41 19 + 30 = 49 1 + 44 = 45 2 + 43 = 45 3 + 42 = 45 4 + 41 = 45 5 + 40 = 45 6 + 39 = 45 31 + 10 = 41 24 + 20 = 44 11 + 66 = 77 1 + 46 = 47 1 + 50 = 51 60 + 20 = 80 65 - 20 = 45 5 × 9 = 45