A comparison of two quantities is called a _________. ratio.

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Presentation transcript:

A comparison of two quantities is called a _________. ratio

rhombi to trapezoids 6 to :4 part-to-part

shapes to rhombi 10 to :6 whole-to-part

rhombi to shapes 6 to :10 part-to-whole

÷ =

12 13 n 52 n 52 = × =

n9n9n9n = ÷ =

Carmen is making a mobile using rhombi and other shapes. The mobile needs to have a ratio of 3 rhombi for every 6 shapes. How many rhombi does Carmen need if she makes a mobile with 12 shapes? with 18 shapes? with 24 shapes?

rhombi6 shapes

A rate or ratio that has 1 as the second term is a(n) _________. unit rate

Samuel earned $9 for working 2 hours. What is Samuel’s unit rate or rate per hour? $9 2 hr $9 2 hr n 1 hr n 1 hr = $9 2 hr $9 2 hr $ hr ÷ =

Samuel earned $9 for working 2 hours. What is Samuel’s unit rate or rate per hour? $ hr $ × = $4.50 × 7 $

If a car traveled 3 hours at 55 mi/hr, what was the distance the car traveled? 55 mi 1 hr 165 mi 3 × = 55 ×

4 minutes at 75 m/1 min 300 m 4 × = 75 m 1 min 75 ×

5 days at 20 km/day 5 × = 20 km 1 d 100 km

46% ÷ = % 23% 20% 7%4% PacificAtlanticIndianArcticOther

23% % 23% 20% 7%4% PacificAtlanticIndianArcticOther

20% ÷ = % 23% 20% 7%4% PacificAtlanticIndianArcticOther

4% ÷ = % 23% 20% 7%4% PacificAtlanticIndianArcticOther

7% % 23% 20% 7%4% PacificAtlanticIndianArcticOther

On a science test, Cassie answered 18 out of 20 questions correctly. What percent of the questions did she get correct? × = = 90% = n 100 n ×

On a science test, Cassie answered 18 out of 20 questions correctly. What percent of the questions did she get correct? = 90% − 0..0

This summer, 38 relatives attended our annual family reunion. What percent of our 50 relatives attended? × = = 76% = n 100 n ×

This summer, 38 relatives attended our annual family reunion. What percent of our 50 relatives attended? 76% − − 0

A board game that is regularly priced at $50 is on sale for 20% off the original price. What is the discount? 2 × $5 = $10

A board game that is regularly priced at $50 is on sale for 20% off the original price. What is the discount? ÷ = $10 = n 50 n 50

A board game that is regularly priced at $50 is on sale for 20% off the original price. What is the discount? 50 × 0.20 $10.00

A sweater that is regularly priced for $25 is on sale for 80% off the original price. What is the discount? What is the sale price of the sweater? $2.50 × 8 $

A sweater that is regularly priced for $25 is on sale for 80% off the original price. What is the discount? What is the sale price of the sweater? ÷ = $20 = n 25 n 25

A sweater that is regularly priced for $25 is on sale for 80% off the original price. What is the discount? What is the sale price of the sweater? $25 × 0.80 $

A sweater that is regularly priced for $25 is on sale for 80% off the original price. What is the discount? What is the sale price of the sweater? $25 − $20 = $5