# Basic Operations: Prime Factorize This! Quiz

Think you’ve got your head wrapped around Basic Operations? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q. Simplify the expression .

12
49
4
1
0
Q. Prime factorize 2520.

2520 cannot be prime factorized because it is prime.
22 × 32 × 5 × 7
2 × 32 × 4 × 5 × 7
23 × 32 × 5 × 7
23
Q. Find the least common multiple of 16 and 128.

128
256
16
8
2
Q. Find the greatest common factor of 54 and 126.

18
9
378
6
2
Q. Simplify the expression .

512
9.5
10
17
2
Q. Prime factorize 2221.

2221 cannot be prime factorized because it is prime.
32 × 73
11 × 132
32 × 172
23
Q. Find the least common multiple of 14, 18, and 20.

210
1260
5040
2
1
Q. Find the greatest common factor of 34, 68, and 85.

2
17
1
34
3
Q. Maisy wears a particular pair of jeans every four days. She wears her favorite sweatshirt every six days. If she wore them both together today, when will she wear them together again next?

In 10 days
In 24 days
In 12 days
Tomorrow
Never again
Q. The least common multiple of two numbers is 600, and the greatest common factor of the same numbers is 20. What are the numbers?

100 and 300
80 and 60
40 and 100
100 and 120
1 and 2