LCM, GCF, & More

LCM

100

Find the LCM of 6 and 3

6

200

Find the LCM of 5 and 25

25

300

Find the LCM of 12 and 14

84

400

Find the LCM of 15 and 25

75

500

Find the LCM of 16 and 40

80

GCF

100

Find the GCF of 3 and 6

3

200

Find the GCF of 12 and 18

6

300

Find the GCF of 14 and 28

14

400

Find the GCF of 50 and 75

25

500

Find the GCF of 100 and 24

4

Prime Factorization

100

24

2x2x2x3

200

50

2x5x5

300

80

2x2x2x2x5

400

100

2x2x5x5

500

500

2x2x5x5x5

LCM or GCF

100

Find the GCF of 24 and 36

12

200

Brain Break: How do you teach math to a chicken?

You show it lots of egg-samples!

300

Find the GCF of 100 and 120

20

400

What is the LCM of 45 and 60

180

500

Find the LCM of 24 and 36

72

Word problems

100

Turner is planting 30 bushes and 40 trees in rows. If he wants all the rows to be exactly the same, with no plants left over, what is the greatest number of rows Turner can plant?

10 rows

200

Liz notices that her apartment number is divisible by 4, and her sister notices it is divisible by 2. What is the smallest possible apartment number?

4

300

Mitchell has 48 math books and 40 science books. If he wants to distribute them evenly among some bookshelves so that each bookshelf has the same combination of math and science books, with no books left over, what is the greatest number of bookshelves Mitchell can use?

8 bookshelves

400

Nathan is buying flower bulbs for his garden. He wants to buy the same number of tulips and daffodils. If tulip bulbs come in packs of 8 and daffodil bulbs come in packs of 5, what is the least number of each type of bulb Nathan will need to buy?

40 bulbs

500

Farid's Blossoms sells roses in groups of 6. Across town, Kylie's Blooms sells roses in groups of 12. If a customer wants to buy the same number of roses from both vendors, what is the smallest number of roses the customer will have to buy from each vendor?

12 roses