Intro to Unit Rates - 6th

Unit

Rates

CJ Williams

Math

In order to simplify and find the unit rate: ALWAYS divide both numbers by the denominator!

For example....

Another Example...

Another Example...

Rates can also be Fractional

Remember to keep, change and flip if you have to divide with fractions!

Rates can also be Fractional

Sasha can mow 3/8 of an acre of grass in 3/4 an hour.

How many acres of grass does Sasha mow per hour?

 

STUDENT VOLUNTEER?

Remember to keep, change and flip if you have to divide with fractions!

Open Ended

LET'S TRY IT!

Find the unit rate in crayons per box:

125 crayons in 5 boxes.

WORK

Find the unit rate in crayons per box:

125 crayons in 5 boxes.

Open Ended

Find the unit rate in cookies per pack:

90 cookies in 6 packs.

WORK

Find the unit rate in cookies per pack:

90 cookies in 6 packs.

Multiple Choice

A unit rate is a rate in which the n in the denominator is:

• 0

• 3

• 1

• 2

Math Response

Zya read 300 words in 6 minutes.

At what rate is she reading?

(words per minute)

$$\frac{words}{\min}$$

Type answer here

Correct Answer: 50

Deg^°

Rad

Math Response

Ms. Carr sharpens 180 pencils to distribute to her 15 kindergarten students. How many pencils should each student get?

$$\frac{pencils}{students}$$  

Type answer here

Correct Answer: 12

Deg^°

Rad

Math Response

Devin finished 4 levels of his game in 1/2 an hour.

How many levels can he complete in one whole hour?

Type answer here

Correct Answer: 8

Deg^°

Rad

Multiple Choice

Madison is making pies. To make 14 pies, she uses 42 Cups of flour.

How many cups of flour are needed to make 1 pie?

( Because you want 1 pie your fraction is $$\frac{flour\ }{pie}$$  )

• 3 cups

• 5 cups

• 6 cups

• 1/3 of a cup

Multiple Choice

9 bags of Takis cost $27.

How much money does 4 bags cost?

• 4 bags cost $2.50

• 4 bags cost $16

• 4 bags cost $12.

• 4 bags cost $20

Math Response

A piano teacher charges $192 for 12 piano lessons.

What is the price of three lessons?

$$\frac{price}{lesson}$$  

Type answer here

Correct Answer: 48

Deg^°

Rad

Multiple Choice

Which is the better deal? (lower unit price)

Oreos: $4.59 for 9 oz OR Chips Ahoy: $3.68 for 8 oz

• Oreos

• Chips Ahoy

Multiple Choice

Maurasia bought 2 bubblegum snowballs for $2.10, and Maurice bought 3 red velvet snowballs for $3.45.

Who got the better deal? (lower unit price)

• Ketyri

• Maurice