Hands-on math!

Washington State Math Olympiad
Hints and Solutions
2011 Grade 5 Measurement
Problem

1) Farmer Judy is creating an oddly shaped rotationally symmetric raised garden bed. For every square foot of garden, she needs 1 pound of manure. How many pounds of manure will she need for this bed? (The dashed lines are to indicate lengths and are not part of the framing.)

2) A gingerbread recipe calls for 1 and 1/3 cups of flour and an 8 inches by 10 inches baking pan. Jodi wants to increase the recipe so that she can use her 9 by 13 inch pan. How much flour should she use to the nearest 1/8 cup?

Problem

3) This figure is made up of 13 congruent squares. The perimeter of the figure is 140 cm. Find the area of the figure in square centimeters. The figure is not to scale.

4) Ayden claims his dad can count to 1,000,000 saying each number. If on average it takes 2 second to say each number, how long does it take to count to 1,000,000 without taking any breaks? Round your answer to the nearest day.

5) The PTA is organizing an ice cream extravaganza with 8 flavors of ice cream. They need a total of 5 gallons of ice cream. The 1.75 quarts containers of ice cream are on sale at 2 for $6.00. How much will they spend on ice cream?