Hands-on math!

Washington State Math Olympiad
Hints and Solutions
2017 Grade 5 Algebra

Problem

1) Aaron is making a pattern with tiles.
If he keeps this pattern going, how many tiles will be in figure 20?

2) It costs a fixed fee to set up a party at the local trampoline gym. After that amount is paid, there is a cost per guest. Based on the table below, how much is the fixed fee to set up a party?

3) A pile of 30 coins is worth $5.00. There are only quarters, dimes, and nickels in the pile. There are only 2 dimes. How many quarters are there?

4) I'm thinking of a number. If I multiply my number by 12 and then add 2, I get the same result as if I had added 90 to my number. What is my number?

5) Raihana is reading a new book. She just finished 1/3 of the book. She notices that if she reads 60 more pages she will be 1/2 done with the book. How many pages long is the book?