45 加法 21 等于多少？

45 + 21 = 66

45加法21 等于 66

竖式演算

45+2166

验算

  • 用减法验算：66 − 21 = 45
  • 用减法验算：66 − 45 = 21

相关题目

45 + 20 = 65 45 + 22 = 67 45 + 19 = 64 45 + 23 = 68 45 + 24 = 69 45 + 18 = 63 45 + 25 = 70 45 + 17 = 62 44 + 21 = 65 46 + 21 = 67 47 + 21 = 68 43 + 21 = 64 48 + 21 = 69 42 + 21 = 63 49 + 21 = 70 41 + 21 = 62 1 + 65 = 66 2 + 64 = 66 3 + 63 = 66 4 + 62 = 66 5 + 61 = 66 6 + 60 = 66 1 + 44 = 45 18 + 31 = 49 6 + 11 = 17 100 + 55 = 155 14 + 50 = 64 72 + 27 = 99 95 - 29 = 66 22 × 3 = 66