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# 4__2__8=20

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

### 2 Answers by Expert Tutors

Kathye P. | Math Geek, passionate about teachingMath Geek, passionate about teaching
5.0 5.0 (150 lesson ratings) (150)
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!

You nailed it Kathye!

Arthur S. | Math, Science, Chemistry, and Computer TutorMath, Science, Chemistry, and Computer T...
-3

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