GCF and LCM
1) Find the GCF of 13 and 39.
What is 13.
An amusement park sold 16 child tickets and 44 adult tickets in an hour. Write a simplified ratio and its meaning to the number of adult tickets sold to kids tickets.
For every 4 child tickets sold there are 11 adult tickets sold.
10) Write 90 words in 2 minutes as a unit rate.
45 words per minute.
solve #13 in your review packet.
What is 7 cups of whole wheat flower.
Simplify 36/45.
What is 4/5.
2) Find the GCF of 14, 28, and 56.
What is 14.
The space program has 41 astronauts in outer space and 33 astronauts on Earth. What is the ratio of astronauts in outer space to the total numbers of astronauts. Then explain its meaning.
41/74. 41 out of 74 astronauts are in outer space.
11) Mr. Ernesto spent $72 for 3 bags of grass seed. How much did he spend on each bag?
solve #14 in your review packet.
What is 80 minutes.
Simplify 12/20.
What is 3/5.
4) Find the Least Common Multiple (LCM) of 4 and 5.
What is 20.
Please solve #9 in your review packet.
New ratio is 33 to 66.
12) A grocery store sells a 20-ounce bottle of laundry detergent for $10 and a 15-ounce bottle of the same detergent for $9. Which size of bottle is less expensive? Explain your reasoning.
The 20 ounce bottle is cheaper per ounce by 10 cents.
Simplify 30/770.
What is 3/77.
5) Angel replaces a light bulb in the hall closet every 3 months and replaces the air filter every 8 months.
He just replaced both items this month. How long will it be until he changes both the light bulb and the
air filter?
What is 24 months.
6) A car dealer has 20 Toyota Camrys and 25 Honda Accords left on the parking lot. The dealer wants to arrange the cars in rows so that each row has the same number of vehicles and the same number of vehicles of each type. What is the greatest number of rows that can be formed? How many of each car are in a row?
5 rows with 4 camrys and 5 accords.