英文描述小數第三位

Question

請問如何描述
0.123
0.445
0.001
這樣的\"精確度只到小數第三位\"呢?

重點在
精確度只到小數第三位
不管數字

謝謝

http://www.gomath.com/htdocs/lesson/decimal_lesson1.htm

為什麼這裡的小數後面都有加s呢?
例如
thousandths

Answer 1

If you're asking about how to say "精確度只到小數第三位", then you can just say "the numbers are accurate to the thousandth digit". The first digit after the decimal is the tenth, second digit is the hundredth, and the third digit is the thousandth.

If you want to know how to say 0.123, then you would say "zero point one two three" (this is the more common way), or "one hundred twenty-three thousandth" (this is the technically correct way).

2006-01-17 16:17:03 補充：
By the way, just for your information, in science we would say "the figures are accurate to three significant digits after the decimal". But then in this case 0.001 would not be right because it has only one significant digit.

2006-01-19 15:04:29 補充：
oh hm, sorry. It should be thousandths. Because it sounds so similar when you pronounce it (thousandth and thousandths), i never picked up the difference. I looked it up on the web and I think I might be able to help you better...

2006-01-19 15:05:54 補充：
So if you want to say "精確度只到小數第三位", it should be "the numbers are accurate to the thousandths digit". Similarly, you would say "the numbers are accurate to the units (or hundreds) digit".

2006-01-19 15:07:31 補充：
And then for a number like 500.048, you would say "Five hundred and forty-eight thousandths". The decimal is read as "and". This website might be helpful:http://www.math.com/school/subject1/lessons/S1U1L2DP.html

2006-01-19 15:09:48 補充：
and lastly, i'm not too sure why there's an "s" after th. My guess is that it is plural. Because 0.001 is one-thousandth, so 0.003 is three (one-)thousandths

Answer 2

cssnoopy 解釋的很好. 完美無缺喔!