Multiplying Fractions and GCF

This video tutorial covers how to multiply fractions using models and without them. It begins with an introduction to the concept of multiplying fractions, explaining the use of models to visualize the process. The tutorial then demonstrates how to simplify the results of fraction multiplication. It also presents strategies for multiplying fractions without models, including simplifying before multiplying to make calculations easier. The video emphasizes understanding the multiplication symbol as 'of' and finding the greatest common factor for simplification.

What is the first step in using models to multiply fractions?

• Draw a square

• Draw a circle

• Draw a rectangle

• Draw a triangle

When multiplying 1/2 and 2/3 using models, what is the denominator of the result?

• 5

• 4

• 3

• 6

What is the greatest common factor of 2 and 6?

• 2

• 3

• 1

• 6

In the second example using models, what fraction are we finding of three-fourths?

• Three-fourths

• Two-thirds

• One-third

• One-half

How many pieces overlap in the model for 1/3 of 3/4?

• 5

• 4

• 3

• 2

What is the greatest common factor of 3 and 12?

• 3

• 2

• 1

• 4

What is the first strategy for multiplying fractions without models?

• Subtract fractions first, then multiply

• Add fractions first, then multiply

• Multiply straight across, then simplify

• Simplify first, then multiply

What is the numerator when multiplying 3/4 and 8/9 using the first strategy?

• 36

• 24

• 27

• 32

What is the greatest common factor of 24 and 36?

• 6

• 8

• 10

• 12

What is the second strategy for multiplying fractions without models?

• Multiply straight across, then simplify

• Subtract fractions first, then multiply

• Simplify first, then multiply

• Add fractions first, then multiply