Step by step
The question
Question: type 3 and 1/2 as an SAT answer.
312
1 Change the form
No mixed numbers on the SAT.
3 and 1/2 would be read as 31/2.
So we make it one fraction.
One whole is 2 halves.
So 3 wholes are 3 × 2 = 6 halves.
Plus 1 more: 7 halves.
312 = 3 × 2 + 12 = 72
Careful!
Don't type 3 space 1/2.
The SAT reads it as 31/2.
Careful: not 3 1/2 ✗
2 Count the characters
The answer box takes 5 characters.
7/2 has 3.
It fits.
7/2: 3 characters, up to 5 fit
3 Type it in
We type 7/2.
7 ÷ 2 is 3.5.
It fits in the box too.
So 3.5 also works: it is the same number.
7 ÷ 2 = 3.5 also OK
Let's look back.
First: change the form.
Then: count the characters.
Last: type it in.
Answer
7 ÷ 2 = 3.5 also OK