3. I got 100 on the test.

3-1. I got a 100 on the test.
3-2. I got a 100 points on the test.
3-3. I got 100 points on the test.
(Which one is right?)

Thank you for your help. 3-3 is right, OK? Then what about 3 and 3-1? Are both grammatical?

3 answers

3-3 is the best.
3 is OK.
3-1 and 3-2 are incorrect.
Thank you, writeacher.

1. How do you get a 100 on a test in math?
(Then this is wrong. Right?)

2. How do you get 100 on a test in math?
(This is right,right? Thank you.)
1 is incorrect; 2 is correct.

When you say sentence 2, it sounds like this:

How do you get one hundred on a test in math?
or
How do you get a hundred on a test in math?