20 加法 3 等于多少？

20 + 3 = 23

20加法3 等于 23

竖式演算

20+323

验算

  • 用减法验算：23 − 3 = 20
  • 用减法验算：23 − 20 = 3

相关题目

20 + 2 = 22 20 + 4 = 24 20 + 1 = 21 20 + 5 = 25 20 + 6 = 26 20 + 7 = 27 20 + 8 = 28 20 + 9 = 29 19 + 3 = 22 21 + 3 = 24 22 + 3 = 25 18 + 3 = 21 23 + 3 = 26 17 + 3 = 20 24 + 3 = 27 16 + 3 = 19 1 + 22 = 23 2 + 21 = 23 3 + 20 = 23 4 + 19 = 23 5 + 18 = 23 6 + 17 = 23 45 + 33 = 78 8 + 50 = 58 100 + 21 = 121 17 + 72 = 89 3 + 70 = 73 11 + 33 = 44 68 - 45 = 23 93 - 70 = 23