3 加法 1 等于多少？

3 + 1 = 4

3加法1 等于 4

竖式演算

3+14

验算

  • 用减法验算：4 − 1 = 3
  • 用减法验算：4 − 3 = 1

相关题目

3 + 2 = 5 3 + 3 = 6 3 + 4 = 7 3 + 5 = 8 3 + 6 = 9 3 + 7 = 10 3 + 8 = 11 3 + 9 = 12 2 + 1 = 3 4 + 1 = 5 1 + 1 = 2 5 + 1 = 6 6 + 1 = 7 7 + 1 = 8 8 + 1 = 9 9 + 1 = 10 1 + 3 = 4 2 + 2 = 4 23 + 4 = 27 33 + 31 = 64 100 + 26 = 126 13 + 76 = 89 50 + 18 = 68 31 + 23 = 54 57 - 53 = 4 72 - 68 = 4 28 - 24 = 4 27 - 23 = 4 90 + 76 = 166 8 + 20 = 28