30 加法 15 等于多少？

30 + 15 = 45

30加法15 等于 45

竖式演算

30+1545

验算

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

相关题目

30 + 14 = 44 30 + 16 = 46 30 + 13 = 43 30 + 17 = 47 30 + 12 = 42 30 + 18 = 48 30 + 11 = 41 30 + 19 = 49 29 + 15 = 44 31 + 15 = 46 28 + 15 = 43 32 + 15 = 47 33 + 15 = 48 27 + 15 = 42 34 + 15 = 49 26 + 15 = 41 1 + 44 = 45 2 + 43 = 45 3 + 42 = 45 4 + 41 = 45 5 + 40 = 45 6 + 39 = 45 61 + 30 = 91 43 + 21 = 64 16 + 61 = 77 39 + 50 = 89 80 + 18 = 98 26 + 33 = 59 45 × 1 = 45 70 - 25 = 45