ACT Prep (prime factorization, lcm, and gcf)

Prime Factorization 1

100

The prime factorization of 12.

What is 2² x 3?

200

The prime factorization of 16.

What is 2^{4 ?}    

300

The prime factorization of 81.

What is 3⁴?

400

The prime factorization of 418.

What is 2*11*19?

500

The prime factorization of 402.

What is 2*3*67?

LCM 1

100

 LCM of 3 and 8

What is the 24?

200

 LCM of 1,2 and 3

What is 6? 

300

 LCM of 3 and 20

What is 60?

400

 LCM of 4, 5, and 8

What is 40?

500

 LCM of 3, 9 and 15

What is 45?

GCF 1

100

GCF of 3 and 7

What is 21?

200

GCF of 12 and 18

What is 2?

300

GCF of 18 and 24

What is 6

400

GCF of 12 and 40

What is 4?

500

GCF of 60 and 24

What is 12?

Prime factorization 2

100

The prime factorization of 18.

What is 2*3²?

200

The prime factorization of 21.

What is 3*7?

300

The prime factorization of 24.

What is 2³ * 3?

400

The prime factorization of 63.

What is 3² * 7?

500

The prime factorization of 363.

What is 3 * 11²?

GCF 2

100

GCF of 6 and 18

What is 6?

200

GCF of 30 and 40

What is 10?

300

GCF of 12 and 15

What is 3?

400

24 and 30

What is 6?

500

GCF of 30 and 60

What is 30?

LCM 2

100

The LCM of (2,3)

What is 6?

200

LCM of 7 and 12

What is 84?

300

The LCM of (3,6,8)

What is 24?

400

The LCM of (2,3,4)

What is 12?

500

LCM of 10 and 25

What is 50?