Hands-on math!

Washington State Math Olympiad
Hints and Solutions
2017 Grade 6 Number Sense

Problem
1) A rectangular strip of paper has an area of 3/4 sq. ft. The rectangle has a width of 3/5 foot. Find the length of the rectangle in feet (express your answer as a reduced fraction).

2) The sum of two numbers is 38. Their product is 360. What are the two numbers?

3) What is the sum of the first 25 odd numbers?

4) Add sets of parentheses to this expression to make the statement true:

12 - 6 - 2 X 8 + 6 / 2 = 56

5) A square with area 1 square meter is repeatedly cut in half with one half of the remainder shaded each time as shown in the figure.What is the area of the shaded region in figure 5?