首页 > 留学知识库

问题: 请看下面各题

1.24点牌大家都玩过请用2.2.6.9.写出为24的算式.
2.把一根木头截成3段,要花6分钟,那么要把10根木头都截成6段,需要多少分钟?

解答:

24点牌大家都玩过请用2.2.6.9.写出为24的算式.


1: (6 ÷ 2 + 9) × 2
2: ((6 ÷ 2) + 9) × 2
3: 2 × (6 ÷ 2 + 9)
4: 2 × ((6 ÷ 2) + 9)
5: 2 × (9 + 6 ÷ 2)
6: 2 × (9 + (6 ÷ 2))
7: (2 × 9 - 6) × 2
8: ((2 × 9) - 6) × 2
9: 2 × (9 × 2 - 6)
10: 2 × ((9 × 2) - 6)
11: 2 × (2 × 9 - 6)
12: 2 × ((2 × 9) - 6)
13: (9 + 6 ÷ 2) × 2
14: (9 + (6 ÷ 2)) × 2
15: (9 × 2 - 6) × 2
16: ((9 × 2) - 6) × 2

把一根木头截成3段,要花6分钟,那么要把10根木头都截成6段,需要多少分钟?

还是6分钟