Imagine Schools Math Challenge Worksheet With Answer Key - 4th Grade, 2014 Page 13
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33Project #11
Domain: Number and Operations—Fractions
Standards:
4.NF.3a Understand addition and subtraction of fractions as joining and separating parts referring to
the same whole.
Directions: Solve the following problems. Show how you reached your solution.
1. Mary and Lacey decide to share a pizza. Mary ate 3/6 and Lacey ate 2/6 of the pizza. How much of
the pizza did the girls eat together?
2. What part of the M&M'S are not orange?
Pack of M&M's
Color
Number
of M&Ms
Red
3
Orange
12
Green
5
Yellow
9
Blue
6
Brown
12
Light brown
2
Answer: _____ out of __________ are not orange.
3. Challenge:
Get a snack size or King Size bag of M&Ms. Complete your own investigation to see what part of
the M&Ms are not orange.
Create a chart to record the color of M&Ms and the number of each.
Compare your results with the ones above and write any observations you come to below.
Possible solutions:
1. The amount of pizza Mary ate can be thought of a 3/6 or 1/6 and 1/6 and 1/6. The amount of pizza
Lacey ate can be thought of a 1/6 and 1/6. The total amount of pizza they ate is 1/6 + 1/6 + 1/6 + 1/6
+ 1/6 or 5/6 of the whole pizza.
*Students should justify their breaking apart (decomposing) of fractions using visual fraction models.
The concept of turning mixed numbers into improper fractions needs to be emphasized using visual
fraction models.
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13
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