WASHINGTON STATE MATHEMATICS COUNCIL 2000 MIDDLE SCHOOL MATH OLYMPIAD Session II: FIFTH GRADE NUMBER SENSE

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1. Chunky Nuggets dry dog food is 6 parts meat and 4 parts filler. How many pounds of filler are there in a 50 pound bag of Chunky Nuggets?

2. Mike has 12 more pencils than Erica. Erica has 9 more pencils than Karen. Mike, Erica and Karen decide to split the pencils so each will have the same number of pencils. How many pencils will Mike lose?

3. Five consecutive (in a row) odd numbers have a sum of 505. What is the largest of these numbers?

4. On a number line, find the number that is 1/5 of the distance from -3 to 17.

5. I have a fraction. If I add 1/3 to it, I get 3/4. What is my fraction?