Multiple
What are the first three multiples of 5?
5,10,15
What are the factors of 12?
1,2,3,4,6,12
What is a prime number?
Any number cannot be divided by a whole number other than itself and one.
What is a composite number?
Numbers that have 2 or more factors.
If you count by 3s, what is the 5th multiple you would say?
15
How many factors does the number 18 have?
6
Is the number 7 a prime number? Explain why.
Yes, it's only factors are 7 and 1.
Is 3 a composite number? Why or why not?
No, it only has 2 factors.
List the first five multiples of 4.
4,8,12,16,20
What is a way to find the factors of a number?
List them in order
List three prime numbers between 1 and 20.
2,3,5,7,13,17,19
List 3 composite numbers between 1 and 10.
4,6,8,9
What is the least common multiple (LCM) of 6 and 8?
24
What are the factors of 30?
1,2,3,5,6,10,15,30
What is the smallest prime number?
3
Is 28 a composite number?
Yes
How many multiples of 10 are there between 1 and 100?
10
Are 1 and the number itself always factors of any number? Why or why not?
Yes, because you can always divide the number itself by 1.
Why is the number 1 not considered a prime number?
It only has 1 divisor.
Why is 7 not a composite number?
It only has 2 factors, 1 and 7.