Number Theory Review

Miscellaneous

100

What is Mr. Berlin's favorite candy?

Kit Kat

200

Michael Jackson was known as the "King of _____".

Pop

300

What term is used to describe the art of folding paper sculptures?

Origami

400

Which planet is known as the red planet?

Mars

500

What facial feature is the Mona Lisa missing?

Face

Prime Factorization

100

Is 13 prime or composite?

Prime

200

Is 72 prime or composite?

Composite

300

What is the Prime Factorization of 100?

2² * 5²

400

What is the Prime Factorization of 36?

2² * 3² 

500

What is the prime factorization of 250?

2 * 5³

Greatest Common Factor

100

What is the greatest common factor of 12 and 15

3

200

What is the greatest common factor of 24 and 20?

4

300

What is the greatest factor of 16 and 36?

4

400

What is the great common factor of 50, 35, and 15?

5

500

What is the greatest common factor of 64 and 80?

16

Least Common Multiple

100

What is the least common multiple of 3 and 7?

21

200

What is the least common multiple of 4 and 9?

36

300

What is the least common multiple of 2, 3, and 5?

30

400

What is the least common multiple of 20 and 12?

60

500

What is the least common multiple of 21 and 24?

168

Word Problems

100

Timer 1 is set to beep every 8 minutes. Timer 2 is set to beep every 6 minutes. How many times will they beep at the same time in 30 minutes?

1

200

You bring snacks for your basketball team every fifth game. Every third game is a home game. When will be the first time that you bring snacks to a home game?

15th game

300

Sarah is making bead necklaces. She has 60 blue beads and 72 green beads. What is the greatest number of identical necklaces she can make if she wants to use all the beads?

6

400

Three pigs entered a race around a track. Piggly takes 12 minutes to run one lap. Piglet takes 6 minutes to run one lap and it takes Wiggly 16 minutes to run one lap. If all three pigs begin the race at the same time, how many minutes will it take for all three pigs to be at the starting point again?

48 minutes

500

Johnny baked 36 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for his teacher friends at school. He wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If he wants each container to have the greatest number of cookies possible, how many plastic containers does he need?

12 plastic containers