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Multiplying Fractions

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by

Whitney Baker

on 4 September 2013

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Transcript of Multiplying Fractions

Steps to Multiplying Fractions
Ideas
Ideas
Multiplying Fractions
Yes, you CAN!
Construct array models (area models) to represent fractional multiplication.
Simplify fractions, if needed.
Recall the steps to multiply fractions.
Terms to Know
Numerator: The number of parts of the whole; also the top number of a fraction.

Denominator: The total number of equal parts; also the bottom number of a fraction.

Simplify: To reduce to lowest terms by canceling the lowest common factor.

Array model (area model): A model of multiplication that shows the product within a rectangle drawing.
Multiplying Fractions
Step 1
Step 3
Simplify the product, if needed.
Whiteboard Review
Numerator
Denominator
Numerator
Denominator
Multiply the numerators.
2
3
1
2
2
Step 2
Multiply the denominators.
2
3
1
2
2
6
How would you simplify :
2
6
Find the Greatest Common Factor (GCF) of the numerator and denominator. It's the GREATEST number!
2
6
.
.
2
.
.
2
1
3
1 2
8 3
x
=
3 7
4 8
x
=
I can multiply fractions by using array models (area models)!
At the Memphis Zoo, an animal trainer went on break.
He had of a sandwich and decided to give of the
to Mona, the monkey. What fraction of the whole
sandwich did the animal trainer give Mona?
1
2
1
2
Group Activity
A recipe makes soft pretzels. If your group sprinkles Parmesan cheese as a topping over of the baked pretzels, how many cheese pretzels will your group make?
1. Solve. Simplify, if needed.

2.Create an array model to verify your answer.

3. Group Representative.
Memphis Zoo World Problem
Array Model:
12
2
3
1
2
Full transcript