一个二年级的思考题2 4 8 9运用加减乘除使得结果等于24.有三种解法我做出一种 (9-4-2)*8=24 还有两种方法
2019-06-02
一个二年级的思考题
2 4 8 9
运用加减乘除使得结果等于24.有三种解法
我做出一种 (9-4-2)*8=24 还有两种方法
优质解答
1: 8 × (9 - (2 + 4))
2: 8 × (9 - 2 - 4)
3: 8 × ((9 - 2) - 4)
4: 8 × (9 - (4 + 2))
5: 8 × (9 - 4 - 2)
6: 8 × ((9 - 4) - 2)
7: (9 - (2 + 4)) × 8
8: (9 - 2 - 4) × 8
9: ((9 - 2) - 4) × 8
10: (9 - (4 + 2)) × 8
11: (9 - 4 - 2) × 8
12: ((9 - 4) - 2) × 8 其实就一种解法,不过就是括号动来动去的,没意思.
1: 8 × (9 - (2 + 4))
2: 8 × (9 - 2 - 4)
3: 8 × ((9 - 2) - 4)
4: 8 × (9 - (4 + 2))
5: 8 × (9 - 4 - 2)
6: 8 × ((9 - 4) - 2)
7: (9 - (2 + 4)) × 8
8: (9 - 2 - 4) × 8
9: ((9 - 2) - 4) × 8
10: (9 - (4 + 2)) × 8
11: (9 - 4 - 2) × 8
12: ((9 - 4) - 2) × 8 其实就一种解法,不过就是括号动来动去的,没意思.