Factors
Which number is a factor of every number?
1
What is the first three multiples of 5?
5, 10, 15
Is the number 2 prime or composite?
Prime
5 apples
What do we call the answer to a multiplication problem?
Product
What are the factors of 12?
1, 2, 3, 4, 6, 12
Name the first five multiples of 4.
4, 8, 12, 16, 20
Is the number 9 prime or composite?
Composite
The cheerleaders are counting by 3s to warm up. What are the first four number they will say?
3, 6, 9, and 12
What is a number that is being multiplied by another number?
Factor
What number is a common factors of both 16 and 24?
8
Which number is a multiple of both 3 and 6?
12 (also 18, 24, etc.)
Is 15 prime or composite? How do you know?
There are 12 cookies. Mrs. Irwin wants to put the same number of cookies on each plate with none left over. What are TWO ways she could do that?
____ cookies on ______ plates.
2 cookies on 6 plates
3 cookies on 4 plates
Multiples
A number (product) has these factors: 1, 2, 4, 5, 10, and 20. What is the number?
20
Is 45 a multiple of 5? How do you know?
Yes, because 45 ends in a 5.
Is 7 prime or composite?
Prime
There are 18 students making equal rows for a class picture. What are TWO possible ways they could line up?
____ rows of _____.
3 rows of 6
What do we call numbers that have only one factor pair?
Prime numbers
This number has exactly three factors: 1, 3, and 9. What is the number?
9
What is the FIRST common multiple of 6 and 8?
24
Which number below is NOT a prime number:
19, 23, 27, or 29?
There are 5 tables of 4 students at each table. How many students are there in all?
20
What do we call a number that has more than one factor pair?
Composite number