8 加法 23 等于多少？

8 + 23 = 31

8加法23 等于 31

竖式演算

18+2331

验算

  • 用减法验算：31 − 23 = 8
  • 用减法验算：31 − 8 = 23

相关题目

8 + 22 = 30 8 + 24 = 32 8 + 21 = 29 8 + 25 = 33 8 + 20 = 28 8 + 26 = 34 8 + 19 = 27 8 + 27 = 35 7 + 23 = 30 9 + 23 = 32 6 + 23 = 29 10 + 23 = 33 11 + 23 = 34 5 + 23 = 28 12 + 23 = 35 4 + 23 = 27 1 + 30 = 31 2 + 29 = 31 3 + 28 = 31 4 + 27 = 31 5 + 26 = 31 6 + 25 = 31 82 + 90 = 172 51 + 93 = 144 92 + 53 = 145 35 + 36 = 71 82 + 85 = 167 15 + 7 = 22 60 - 29 = 31 40 - 9 = 31