Factors and Multiples
List ALL the factors of 12
1,3,4,6,12
What is the definition of a prime number?
A number greater than 1 that has exactly two factors: 1 and itself.
What are the next two numbers in this pattern? 4, 8, 12, 16, __, __
20, 24 (Rule: Add 4).
Write a multiplication equation to represent: "24 is 4 times as many as 6."
4 x 6 = 24
Which numbers are factors of 24?
Select all that apply.
☐ A. 2
☐ B. 3
☐ C. 5
☐ D. 6
☐ E. 8
2,3,6,8
What are the first four multiples of 6
6, 12, 18, 24
Is the number 15 prime or composite? Explain.
Composite, because it has more than two factors (1, 3, 5, 15).
Describe the rule for this sequence: 3, 6, 12, 24, 48.
Multiply by 2 (or double the previous number).
Maya has 5 stickers. Her brother has 3 times as many stickers as Maya. How many stickers does her brother have?
15 stickers ($5 \times 3 = 15$)
Which numbers are multiples of 8?
Select all that apply.
☐ A. 16
☐ B. 20
☐ C. 24
☐ D. 32
☐ E. 36
16,24,32
Is 35 a multiple of 5? How do you know?
Yes, because $5 \times 7 = 35$
What is the only even prime number?
2
If a pattern follows the rule "Subtract 5" and starts at 40, what is the 4th term?
25 (Terms: 40, 35, 30, 25).
Fill in the blank: 42 is ____ times as many as 7.
6
Which statements are true about the number 18?
Select all that apply.
☐ A. 2 is a factor of 18.
☐ B. 3 is a factor of 18.
☐ C. 18 is a multiple of 4.
☐ D. 18 is a multiple of 6.
☐ E. 5 is a factor of 18.
A,B,D
Find a number between 20 and 30 that is a common multiple of both 3 and 4.
24 (3 times 8 = 24 and 4 times 6 = 24).
Identify which of these numbers is prime: 9, 17, 21, 25
17
Look at the pattern: Circle, Square, Triangle, Circle, Square, Triangle... What shape will be in the 14th position?
Square (12th is Triangle, 13th is Circle, 14th is Square).
A large tree is 36 feet tall. A small bush is 4 feet tall. How many times taller is the tree than the bush?
9 times taller
Which statements are true about the number 24?
Select all that apply.
☐ A. 2 is a factor of 24.
☐ B. 5 is a factor of 24.
☐ C. 24 is a multiple of 6.
☐ D. 24 is a multiple of 7.
☐ E. 8 is a factor of 24.
A,C,E
A teacher has 24 desks. List all the factor pairs of 24.
Any 3 of: 1 x 24, 2 x 12, 3 x 8, or 4 x 6.
True or False: All odd numbers are prime. Give an example to prove your answer.
False. Example: 9, 15, or 21 are odd, but composite.
A pattern starts at 2 and uses the rule "Add 3." Will the 10th number in this pattern be even or odd?
Odd. (Pattern: 2, 5, 8, 11, 14, 17, 20, 23, 26, 29).
Sam scored 8 points in a game. Alex scored p points, which is 4 times as many as Sam. Write an equation using p and solve for how many points Alex scored.
p = 8 x 4; p = 32 points
Which statements are true?
Select all that apply.
☐ A. 7 is a factor of 56.
☐ B. 6 is a factor of 32.
☐ C. 80 is a multiple of 8.
☐ D. 56 is a multiple of 9.
☐ E. The only factor pair for 13 is 1 and 13.
A, C,E