- UID
- 335688
- 在线时间
- 小时
- 注册时间
- 2008-4-20
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
我在prep做题时碰到2道题目都是关于分数比较级的,题目大致如下:
(1) 7/16 is 3/8 more than N. What is the value of N?
(2) When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5 taller than it was at the end of the 4th year. By how many feet did the height of the tree increase each year?
这两道题本身不难,但是它们对比较级的表达让我困惑了,比如第一道题是说的7/16比N要大3/8,即7/16=N+3/8,但是类似的表达,第二题却变成了6年后的高度比4年后的高度要高1/5倍,而不是1/5 feet!
请问大家,我们在做数学的时候是怎么判断这样分数比较的意思的呢?比如说第一道题,怎么知道它是说大3/8而非大3/8倍呢?我先谢谢啦! |
|