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Factors
Multiples
Prime and Composite Numbers
Vocabulary
Word Problems
100
Which number is a factor of 24? 12, 9, 5, 7
12
100
Find the first 10 multiples of 6.
6, 12, 18, 24, 30, 36, 42, 48, 54, 60
100
Identify the following number as prime or composite. 45
45 is a composite number.
100

What are numbers that you multiply together to get another number?

factors

100

Create an expression that will help you to solve this problem. Sandra's turtle is four times as long as her pet beetle. If Sandra's turtle is 12 centimeters long, how long is her pet beetle?

Sandra's pet beetle is 3 centimeters long.

200
Which number is NOT a factor of 30? 5, 1, 8, 6
8
200
Find the first 10 multiples of 5. Find the first 10 multiples of 3. What is the Least Common Multiple that both 3 and 5 share?
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 Least Common Multiple: 15
200
Identify the following number as prime or composite. 23
23 is a prime number.
200

What is a multiple of a number?



The product of a whole number and any other whole number.

200

It costs $2 for a small box of crayons at the store. It costs $10 for a large pack of markers at the store. How many times more do the packs of markers cost than the box of crayons? Choose the expression that will solve the problem. A) 2 x 10 = M B) 2M = 10 C) 2 + M = 10 D) 10M = 20

B) 2M = 10

300
Which number is a factor of 10? 20, 12, 5, 3
5
300
Which is a list of multiples of 9? A) 9, 18, 28, 39 B) 9, 18, 27, 36 C) 9, 18, 25, 32 D) 9, 27, 34, 48
B) 9, 18, 27, 36
300
Identify the following number as prime or composite. 13
13 is a prime number.
300

What are prime numbers?

numbers that only have two factors: one, and the number itself.

300

Solve the problem. In a fourth grade classroom, there were 124 books at the beginning of the year in the classroom library. In September, 26 were checked out, but only 14 were returned at the end of the month. How many books are still in the classroom library at the end of the month?

112 books were in the classroom library at the end of the month.

400
Which number is NOT a factor of 36? 12, 6, 4, 8
8
400
Find the first 10 multiples of 4. Find the first 10 multiples of 7. What is the Least Common Multiple that both 4 and 7 share?
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40 Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70 Least Common Multiple: 28
400
Identify the following number as prime or composite. 28
28 is a composite number.
400

What are composite numbers?

Numbers that have more than two factors.

400

Johnny made 37 cookies for his birthday party. His little brother ate 8 cookies before the birthday party even started. Johnny's mom made 20 more cookies to make Johnny stop crying. How many cookies did Johnny have when his birthday party began?

He had 49 cookies when his birthday party began.

500
List ALL of the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
500
Which is a list of multiples of 8? A) 16, 24, 32, 42 B) 8, 16, 26, 32 C) 16, 24, 32, 40 D) 8, 16, 32, 46
C) 16, 24, 32, 40
500
Identify the following number as prime or composite. 33
33 is a composite number.
500

What is a common factor?

A whole number (factor) that is shared with two or more other whole numbers.
500

Howard decided to take all of his blocks and build a tall tower in his bedroom. He started with 30 blocks. While building, he found 28 more blocks under his bed. He put these blocks on top of the original blocks and continued to build his tower. His dog came in and knocked down 14 of the blocks on his tower. How many blocks remained standing?

44 blocks remained standing.