30 减法 15 等于多少？

30 - 15 = 15

30减法15 等于 15

竖式演算

21030-1515

验算

  • 用加法验算：15 + 15 = 30

相关题目

30 - 14 = 16 30 - 16 = 14 30 - 13 = 17 30 - 17 = 13 30 - 12 = 18 30 - 18 = 12 30 - 11 = 19 30 - 19 = 11 29 - 15 = 14 31 - 15 = 16 28 - 15 = 13 32 - 15 = 17 27 - 15 = 12 33 - 15 = 18 34 - 15 = 19 26 - 15 = 11 16 - 1 = 15 17 - 2 = 15 18 - 3 = 15 19 - 4 = 15 20 - 5 = 15 21 - 6 = 15 74 - 66 = 8 20 - 19 = 1 20 - 8 = 12 31 - 26 = 5 75 - 26 = 49 50 - 44 = 6 3 × 5 = 15 13 + 2 = 15