15 加法 8 等于多少？

15 + 8 = 23

15加法8 等于 23

竖式演算

115+823

验算

  • 用减法验算：23 − 8 = 15
  • 用减法验算：23 − 15 = 8

相关题目

15 + 7 = 22 15 + 9 = 24 15 + 6 = 21 15 + 10 = 25 15 + 11 = 26 15 + 5 = 20 15 + 12 = 27 15 + 4 = 19 14 + 8 = 22 16 + 8 = 24 13 + 8 = 21 17 + 8 = 25 12 + 8 = 20 18 + 8 = 26 11 + 8 = 19 19 + 8 = 27 1 + 22 = 23 2 + 21 = 23 3 + 20 = 23 4 + 19 = 23 5 + 18 = 23 6 + 17 = 23 80 + 42 = 122 80 + 81 = 161 46 + 16 = 62 98 + 80 = 178 43 + 61 = 104 58 + 90 = 148 95 - 72 = 23 98 - 75 = 23