GCF or LCM
What is the GCF of 20 and 45?
5
3 1/2 x 2/3
14/6 or 2 1/3
Drew has 3 pounds of strawberries. How many pies can he make if each pie requires 1/3 of a pound of strawberries?
9 pies
Find the unit rate.
154 miles for 7 gallons
22 miles for 1 gallon
Create a tape diagram using the ratio, 5 white : 6 shaded. You have a total of 44 tiles.
How many white tiles?
How many shaded tiles?
20 white tiles
24 shaded tiles
What is the LCM of 48 and 72?
144
4 x 2/5
8/5 or 1 3/5
At lunch, Heather eats a PB&J sandwich every 5th day and she drinks milk every 4th day. If she has both of those items today, how many days will pass before she will have both again?
20 days
Which is the better buy?
$5.60 for 14 oz of cranberry sauce
$7.92 for 18 oz of cranberry sauce
A. Find the unit cost of each can.
B. How much do you save on the cheaper can?
$0.40/oz and $0.44/oz
The first option is cheaper by $0.04/oz.
Create a tape diagram using the ratio of 2 cups of blueberries and 5 cups of blackberries. The recipe calls for 12 cups of blueberries.
How many cups of blackberries?
How many total cups of berries are needed?
Blackberries: 30 cups
Total: 42 cups
What is the GCF and LCM of 36 and 60?
GCF is 12
LCM is 180
1 1/2 divided by 2/16
48/4 or 12
Shay uses 1 1/2 cups of butter to make 6 loaves of bread. How much butter is in one loaf?
1/4 or 3/12 cup of butter
It snowed 9 out of every 12 days in the month of February. There are 28 days in February that year.
On how many days did it snow that month?
21 days
How many words can Alexia write in 6 minutes?
Words 90 _____ ____
Minutes 2 _____ 6
Unit Rate: 45 words/ 1 min
270 words
What is the GCF and LCM of 12, 30, 72?
GCF is 6
LCM is 360
7/8 divided by 3 1/2
14/56 or 1/4
The following ads run as follows:
Toothpaste every 4 minutes, Deodorant every 8 minutes, and Hairspray every 16 minutes.
If they happen together at 6:00 PM, what is the next TIME they happen together?
LCM is 16 minutes
6:16 PM
11 out of every 15 students participate in sports after school. There are a total of 135 students in 8th grade.
A. How many students play a sport after school?
B. How many students do NOT play a sport after school?
A. 99 students
B. 36 students
How many games did Dylan play to score 424 points?
Points 106 _____ 424
Games 2 _____ _____
Unit Rate: 53 points/ 1 game
8 games
Mr and Mrs. Waibel are looking for a new truck. Here are the gas mileage for each option. Compare the unit rates, choose the best deal, and EXPLAIN your choice.
A: 440 miles for 20 gallons
B: 384 miles for 16 gallons
C: 506 miles for 22 gallons
A. 22 miles per gallon
B: 24 miles per gallon
C: 23 miles per gallon
Truck B is the best choice because it can go further on 1 gallon of gas than the other options. It goes 1 mile further than Truck C and 2 miles further than Truck C.