Unit Zero Review

Divisibility Rules

100

A number is divisible by 6 if... 

What is... divisible by both 2 and 3?

200

A number is divisible by 9 if...

What is... the sum of the digits is divisible by 9 ? 

300

Name a four-digit number that is divisible by 4

What is... a number with the last two digits that are divisible by 4 ?

400

8,136 is divisible by... 

(name all from 2, 3, 4, 5, 6, 8, 9, 10) 

What is 2, 3, 4, 6, 8, and 9 ?

500

7,650 is divisible by... 

(name all from 2, 3, 4, 5, 6, 8, 9, 10)

What is... 2, 3, 5, 6, 9, 10 ?

Exponents

100

Vocab Check: In the example 3², 3 is called the _________ and 2 is called the __________.

What is... 3 is called the base and 2 is called the power ?

200

2⁴ = 

What is... 2 x 2 x 2 x 2 = 16 ? 

300

3^{5 =}

What is... 3 x 3 x 3 x 3 x 3 = 243 ?

400

6^{3 =}

What is... 6 x 6 x 6 = 216 ?

500

10⁶=

What is... 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000 ?

Order of Operations

100

12*(6-2)

What is... 48 ?

200

3^2+5(4-2)

What is... 19 ? 

300

3*6-4-:2

What is... 16? 

400

5^2-15-:5

What is... 22 ?

500

4(3^2-8)-:2

What is... 2 ?

LCM/GCF

100

Least Common Multiple between 15 and 30

What is... 30 ?

200

Least Common Multiple between 10 and 12

What is... 60 ?

300

Greatest Common Factor between 20 and 28

What is... 4 ? 

400

Greatest Common Factor between 48 and 90

What is... 6 ?

500

Greatest Common Factor between 36 and 45 

What is... 9 ? 

Prime Factorization

100

Find the prime factors of 45

3^2*5

200

Find the prime factors of 32

What is 

2^5

300

Find the prime factors of 18

What is... 

2*3^2

400

Find the prime factors of 60

(Hint: use a factor tree)

What is 

2^2*3*5

500

Find the prime factors of 108

What is... 

2^2*3^3