1 加法 39 等于多少？

1 + 39 = 40

1加法39 等于 40

竖式演算

11+3940

验算

  • 用减法验算：40 − 39 = 1
  • 用减法验算：40 − 1 = 39

相关题目

1 + 38 = 39 1 + 40 = 41 1 + 37 = 38 1 + 41 = 42 1 + 42 = 43 1 + 36 = 37 1 + 43 = 44 1 + 35 = 36 2 + 39 = 41 3 + 39 = 42 4 + 39 = 43 5 + 39 = 44 6 + 39 = 45 7 + 39 = 46 8 + 39 = 47 9 + 39 = 48 2 + 38 = 40 3 + 37 = 40 4 + 36 = 40 5 + 35 = 40 6 + 34 = 40 7 + 33 = 40 90 + 72 = 162 42 + 82 = 124 80 + 57 = 137 77 + 71 = 148 18 + 78 = 96 53 + 74 = 127 41 - 1 = 40 57 - 17 = 40