Multiplication of Fractions as Scaling

Multiplication As Scaling

What happens to my product when I multiply? How can I predict the size of my product?

Let's watch this video about multiplication as scaling.

What can we predict about the size of a product?

Multiple Choice

If I multiply any number by 1 whole, my product will be:

• equal

• greater

• less than

Multiple Choice

If I multiply any number by a fraction greater than 1 whole, my product will be:

• equal

• greater

• less

Multiple Choice

If I multiply any number by a fraction less than 1 whole, my product will be:

• equal

• greater

• less

More about multiplication as scaling

More practice with predicting (or interpreting) the size of products.

Multiple Choice

2/5 x 8/8 will be _____ 2/5

• greater than

• less than

• equal to

Multiple Choice

1/2 of 4/5 will be _____ 4/5

• greater than

• less than

• equal to

Multiple Choice

5 x 7/8 will be _____ 7/8

• greater than

• less than

• equal to

Multiple Choice

1/6 x 5/5 will be _____ 1/6

• greater than

• less than

• equal to

Multiple Choice

3 x 7/8 will be _____ 7/8

• greater than

• less than

• equal to

Multiple Choice

1/2 of 10 will be _____ 10

• greater than

• less than

• equal to

Multiple Select

A box of granola weighs 18 ounces. A box of corn flakes weighs 7/9 as much as the granola. Do the corn flakes weigh more or less than 18 ounces?

• less than

• more than

Fill in the Blanks

A box of granola weighs 18 ounces. A box of corn flakes weighs 7/9 as much as the granola. How much do the corn flakes weigh?

Multiple Select

A rectangle has the length of 3 1/4 feet and a width of 1 1/3 feet. Is the area of the rectangle greater or less than 3 1/4?

• greater than

• less than

Fill in the Blanks

A rectangle has the length of 3 1/4 feet and a width of 1 1/3 feet. Is the area of the rectangle greater or less than 3 1/4? What is the area of the rectangle

Multiple Select

The number of students on the football team is 1 3/4 times the number of students on the basketball team. There are 16 students on the basketball team. Are there more or fewer than 16 students on the football team?

• more than

• fewer than

Fill in the Blanks

The number of students on the football team is 1 3/4 times the number of students on the basketball team. How many students are on the basketball team?

Poll

How do I feel about multiplication as scaling?

• Got it!

• Working on it!

• Need help!

Open Ended

Tell me what you thought about this math lesson.