GCF
LCM
Ratios
Unit Rates
100

What is the GCF of 6 and 3

6

100

What is the LCM between 2 and 6

6

100

3 green paper clips and 4 blue paper clips

3/4

100

Unit rate of: 4 beats per 2 seconds

2 b/s

200

What is the GCF of 20 and 15?

5

200

What is the LCM between 7 and 14

14

200

4 apples to 7 watermelons

4/7

200

Unit rate: 6 carrots per 2 rabbits

3 c/r

300

What is the GCF of 14 and 7?

7

300

What is the LCM between 3 and 8

24

300

3 alligators to 6 monkeys

1/2

300

450 miles per 3 hours

150 m/h

400

What is the GCF between 28 and 21

7

400

What is the LCM between 12 and 8

24

400

8 hummingbirds to 10 flowers

4/5

400

3 apples eaten per 12 minutes

1/4 apples eaten per minute

500

What is the GCF of 45 and 54

9

500

What is the LCM of 9 and 7

63

500

9 cups of coffee to 15 teachers

3/5

500

$5.00 per 10 stuffed animals

$0.50 per one animal

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