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 27 + 31 = 58 23 + 31 = 54 42 + 36 = 78 10 + 80 = 90 78 + 100 = 178 19 + 20 = 39 84 - 39 = 45 15 × 3 = 45