*Rate*Unit Rate*Complex Fractions* Created by Educational Technology Network. www.edtechnetwork.com 2009

Rates Unit Rates Complex Fractions Fractions 100 200 300 400 500

Question 1 – 100 points A ratio that compares two quantities with different kinds of units is called a rate. TRUE or FALSE

Answer 1 – 100 points TRUE

Question 1 – 200 points  

Answer 1 – 200 points TRUE

Question 1 – 300 points It took Rachel 22 minutes to type a 650 word essay. How many words was she typing per minute?

Answer 1 – 300 About 29.5 words per minute

Question 1 – 400 points Which of the following are unit rates? (a) $35.25 for 3 movie tickets (b) 135 calories for one cup of cereal (c) 35 pages read in 45 minutes (d) $24.99 for one dozen roses (e) 7 new teachers hired a Portola MS in one year

Answer 1 – 400 B, D and E

Question 1 - 500 Best Buy offers 4 CDs for $60. Target offers 6 CDs for $75. Which store offers the better buy?

Answer 1 – 500 points Target $12.50 each

Question 2 - 100 What is the difference between a rate and an unit rate? Give an example to help explain.

Answer 2 – 100 points  

Give one example of a unit rate and explain why. Question 2 – 200 points Give one example of a unit rate and explain why.

Answer 2 – 200 points Daily Double Any rate that has a denominator of 1 unit. Many possibilities.

Determine the unit price if 5 lbs. (pounds) of corn cost $7.25. Question 2 – 300 points Determine the unit price if 5 lbs. (pounds) of corn cost $7.25.

Answer 2 – 300 $1.45 per pound

Question 2 - 400 The prices of 3 different bags of dog food are given in the table. Which size bag has the lowest price per pound rounded to the nearest cent? Bag Size (lb) Price ($) 40 $49.00 20 $23.44 8 $9.88

The 20-pound bag sells for the lowest price per pound. Answer 2 – 400 points - 40 pound bag $49/40 ≈ $1.23 per pound - 20 pound bag $23.44/20 ≈ $1.17 per pound - 8 pound bag $9.88/8 ≈ $1.24 per pound The 20-pound bag sells for the lowest price per pound.

Question 2 – 500 points At Tire Depot, a pair of new tires sells for $216. The manager’s special advertises the same tires selling at a rate of $380 for 4 tires. How much do you save per tire if you purchase the manager’s special?

Answer 2 – 500 points $13 per tire

Question 3 - 100  

Answer 3 – 100  

Question 3 - 200  

Answer 3 – 200 40 mph (miles per hour)

Question 3 – 300 Daily Double  

Answer 3 – 300  

Question 3 - 400  

Answer 3 – 400 7.5 minutes

Question 3 - 500  

Answer 3 – 500 25 miles per inch

Question 4 – 100 points  

Answer 4 – 100 points  

Question 4 – 100 points  

Answer 4 – 100 points  

Question 4 – 100 points  

Answer 4 – 100 points  

Question 4 – 100 points Daily Double  

Answer 4 – 100 points undefined

Question 4 – 300 points What is the quotient of 81 and 9? What is the quotient of 9 and 81? Does the order matter? Please explain.

Answer 4 – 300 points