30 减法 7 等于多少？

30 - 7 = 23

30减法7 等于 23

竖式演算

21030-723

验算

  • 用加法验算：23 + 7 = 30

相关题目

30 - 6 = 24 30 - 8 = 22 30 - 5 = 25 30 - 9 = 21 30 - 4 = 26 30 - 10 = 20 30 - 11 = 19 30 - 3 = 27 29 - 7 = 22 31 - 7 = 24 28 - 7 = 21 32 - 7 = 25 27 - 7 = 20 33 - 7 = 26 26 - 7 = 19 34 - 7 = 27 24 - 1 = 23 25 - 2 = 23 26 - 3 = 23 27 - 4 = 23 28 - 5 = 23 29 - 6 = 23 36 - 19 = 17 78 - 29 = 49 82 - 9 = 73 64 - 17 = 47 50 - 19 = 31 16 + 7 = 23 14 + 9 = 23 10 + 13 = 23