9 加法 30 等于多少？

9 + 30 = 39

9加法30 等于 39

竖式演算

9+3039

验算

  • 用减法验算：39 − 30 = 9
  • 用减法验算：39 − 9 = 30

相关题目

9 + 29 = 38 9 + 31 = 40 9 + 28 = 37 9 + 32 = 41 9 + 33 = 42 9 + 27 = 36 9 + 34 = 43 9 + 26 = 35 8 + 30 = 38 10 + 30 = 40 11 + 30 = 41 7 + 30 = 37 12 + 30 = 42 6 + 30 = 36 13 + 30 = 43 5 + 30 = 35 1 + 38 = 39 2 + 37 = 39 3 + 36 = 39 4 + 35 = 39 5 + 34 = 39 6 + 33 = 39 58 + 1 = 59 100 + 9 = 109 51 + 22 = 73 27 + 12 = 39 15 + 80 = 95 53 + 33 = 86 70 - 31 = 39 57 - 18 = 39