Math 6A Prime, LCM, GCF, simplifying fractions

Prime Factorization

100

True or False: 3 is prime

True

200

True or False: 9 is prime

False

300

Find the prime factorization of 25.

5×5=5²

400

Find the prime factorization of 8.

2×2×2=2³

500

Find the prime factorization of 12.

2 × 2 × 3 = 2² × 3

LCM

100

What does LCM stand for?

Least Common Multiple

200

Find the LCM of 4 and 6.

4: 4, 8, 12, 16, 18...

6: 6, 12, 18, 24...

LCM = 12

300

Find the LCM of 5 and 10.

5: 5, 10, 15, 20...

10: 10, 20, 30...

LCM = 10

400

Find the LCM of 9 and 12.

9: 9, 18, 27, 36, 45, 54...

12: 12, 24, 36, 48, 60...

LCM = 36

500

Find the LCM of 6 and 15.

6: 6, 12, 18, 24, 30, 36, 42...

15: 15, 30, 45, 60...

LCM = 30

GCF

100

What does GCF stand for?

Greatest Common Factor

200

Find the GCF of 6 and 9.

6: 1, 2, 3, 6

9: 1, 3, 9

GCF = 3

300

Find the GCF of 8 and 12.

8: 1, 2, 4, 8

12: 1, 2, 3, 4, 6, 12 

GCF = 4

400

Find the GCF of 14 and 21.

14: 1, 2, 7, 14

21: 1, 3, 7, 21

GCF = 7

500

Find the GCF of 9 and 27.

9: 1, 3, 9

27: 1, 3, 9, 27

GCF = 9

Simplifying Fractions

100

4/8

1/2

200

6/9

2/3

300

12/30

2/5

400

8/20

2/5

500

10/18

5/9

Teacher Trivia

100

True or False: Mr. Bunn hates rocky road icecream.

False

200

True or False: Mrs. Shannon has been bit by a monkey.

True

300

Where does Mr. Bunn enjoy working? Coffee shops, living room, library

Coffee shops

400

Where does Mrs. Shannon live? California, Arizona, South Dakota

South Dakota

500

What country is Mr. Bunn originally from? Cambodia, Thailand, China

Cambodia