4__2__8=20

Question

what would I put in the blanks to get 20? I have +,-,x,÷

Answer 1

Hi, Nicolette.

Rather than giving you the answer, I am going to give you two hints, and see if you can figure it out.

First, 20 is bigger than 4,2, and 8 added together, so there is going to be some multiplication involved.

Second, remember the order of operations: Parentheses, Exponents, Multiplication and Division, then Addition and Subtraction. For example: 12 - 2 x 5 = 2 because you have to do the multiplication before the subtraction.

Hope this helps!

Answer 2

Nicolette,

Assuming all operators are acceptable including powers, one such possibility is:

4² -2² +8 = 20

16-4+8 = 20

This assumes that powers can be added. I can find no way to 20 with just those operators you have listed.

Arthur