What does 12 times a number mean as an expression?

Answer: 12x

Step-by-step explanation:

1) Since it doesnt provide you with a number to multiply by, you insert a letter like, x. If it provides you with a certain object, instead the first letter of that object

2) Because your question states 12 times, we put together the 12 and x together without the multiplication sign.

3) You are all set. That is an expression! <3