Ratios and Rates

Ratios (SIMPLIFY)

100

There are 16 girls to 20 boys. What is the ratio ?

4:5

200

Raine has 25 red M&Ms and 15 green M&Ms, what is the ratio of red to green?

What is 5:3

300

The ratio of catfish to trout in Jinise's pond is 1 to 3. If there are 200 catfish in the pond, how many trout are there?

600

400

In Nyla's math class, there are 12 boys and 15 girls. What is the ratio of girls to boys in Nyla's math class?

5:4

500

If the ratio of chairs to desk in a room is 2:3, and there are 18 desks. How many chairs are there?

12 chairs

Challenge the other team

100

Who can answer it faster:

1/2 = ?/18

1/2= ?/24

1/2 =9/18

1/2=12/24

200

210x1.7=

357

300

800/2.5=

320

400

Who read faster? Ted took 120 minutes to read 2 books

Zoey took 2 hours to read 2 books 

Trick question DAILY DOUBLE!!!

the both read at the same rate

500

What day of the week does Mrs. Collins Birthday land on??

Wednesday October 22nd

Unit Rate

100

If Shaniya drives 50 miles in 2 hours, what is her rate (speed per hour).

What is 25 miles per hour.

200

Triumph bought a package of three T-shirts for $18.00 What is the unit price per T-shirt? 

$6.00

300

If Zion bought 10 bags of hot cheetos for $3.50, then how much does 1 bag cost?

What is $0.35

400

Zyon bought a 5-pound can of peanuts for $12.50. What is the unit price?

$2.50

500

Aubrey bought a box of 20 pretzel rods for $4.40. What is the price per pretzel rod?

$0.22

Equivalent Ratios

100

Determine if each pair of ratios or rates is equivalent. $3 for 6 bagels; $9 for 18 bagels

Yes, every 6 bagels cost $3 so 18 bagels  cost $9

200

Determine if each pair of ratios or rates is equivalent. 96 words typed in 3 minutes; 160 words typed in 5 minutes.

Yes; since the unit rates are the same, 32 words/1 minute, the rates are equivalent.

300

Determine if each pair of ratios or rates is equivalent. 288 miles on 12 gallons of fuel; 240 miles on 10 gallons of fuel.

Yes; since the ratios share the same unit rate, the number of miles driven and the number of gallons of fuel form equivalent ratios.

400

Determine if each pair of ratios or rates is equivalent. 16 out of 28 students own pets; 240 out of 560 students own pets

No the ratios are not equivalent.

500

Determine if each pair of ratios or rates is equivalent. 8 pairs of socks for $12; 3 pairs of socks for $6

No the ratios are not equivalent.

Vocab

100

y=4x is an example of what

Linear relationship

200

this is when two ratios can be mutiplied or divided by the same number

equivalent ratios

300

what are you doing when you scale up

multiplying

400

what does proportion mean

that the ratio is equivalent or same to the other ratio

500

what does scaling down mean

divide