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Multiplying Fractions by Fractions
19 minutes ago by
Deborah LaCrosse
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• Slide 1
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Multiplying Fractions by Fractions

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• Slide 2
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Multiplying Fractions with a Model

The overlapping area is the answer. So in this problem,

$\frac{1}{3}\times\frac{3}{5}=\frac{3}{15}\ or\ \frac{1}{5}$

• Question 3
30 seconds
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Q.

Which problem does the model represent?

$\frac{1}{5}\times\frac{2}{6}$

$\frac{1}{3}\times\frac{2}{5}$

$\frac{2}{5}\times\frac{1}{5}$

$\frac{2}{5}\times\frac{2}{5}$

• Question 4
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Q.

Which model correctly shows the problem  $\frac{2}{6}\times\frac{1}{5}$  ?

• Question 5
300 seconds
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Q. George has 1/3 pan of brownies. He eats 1/4 of them. What fraction did George eat?
1/7
1/4
1/3
1/12
• Question 6
300 seconds
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Q.

Which product is represented by the model?

2/3 of 3/4

6/12 of 2/3

1/2 of 3/4

1/12 of 2/3

• Question 7
300 seconds
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Q.

What problem is represented by the model?

1/2 x 3/10

3/5 x 9/50

3/5 x 3/10

2/5 x 3/5

• Question 8
300 seconds
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Q.

Use the model to find the product.

35/1

2/12

1/6

1/35

• Question 9
120 seconds
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Q.

Which fraction model shows 2/5 x 2/3?

• Slide 10
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Multiplying Fractions by Fractions Without Models

• Multiply the numerators.

• Multiply the denominators.

• Simplify if needed.

• Question 11
300 seconds
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Q. George has 1/3 pan of brownies. He eats 1/4 of them. What fraction did George eat?
1/7
1/4
1/3
1/12
• Question 12
120 seconds
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Q.

Mimi is baking cookies for her grandson. The recipe calls for ⅔ cup of chocolate chips and she wants to make half of a batch. Which of the following statements is true?

She will use ⅔ cup of chocolate chips.

She will use more than ⅔ cup of chocolate chips.

She will use less than ⅔ cup of chocolate chips.

She will double the amount of chocolate chips.

• Question 13
60 seconds
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Q.

Multiply these fractions: remember to simplify!

1/5

10/18

6/30

0

• Question 14
60 seconds
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Q.

Find the product:

6/28

9/28

6/11

12/21

• Question 15
120 seconds
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Q. There are 28 students in a math class. ⁴⁄₇ of the students were boys. How many boys were in the math class?
16 boys
12 girls
14 girls
12 boys
• Question 16
120 seconds
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Q.

Bella has 32 songs on her iphone. Three-eighths of those songs are by Justin Timberlake. How many Justin Timberlake songs does Bella have on her iphone?

12 songs

15 songs

9 songs

18 songs

• Question 17
30 seconds
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Q.