Multiples
What is the 8th multiple of 3?
24 is the 8th multiple of 3
What are the factors of 32?
1,2,4,8,16,32
What is a prime number?
A number or a product that has ONLY TWO FACTORS!
What is a composite number?
A composite number is a number or product that has MORE THAN TWO FACTORS!
What is a common multiple?
A multiple that two products both have
Example:
Common multiples of 3 and 2 are: 6 and 12
3, 6, 9, 12
2, 4, 6, 8, 10, 12
What is the 6th multiple of 7?
42 is the 6th multiple of 7
What is a factor pair of 20?
1 x 20 20 x 1
2 x 10 10 x 2
5 x 4 4 x 5
17 is a prime number
True or false (if false, explain why)
True
False, 31 does not have more than two factors. The only factors of 31 is 1 and 31 which makes it prime.
What is a common factor?
A factors that two products both have
Example: Common factors of 4 and 6 are: 1 and 2
4 (1, 2, 4)
6 (1, 2, 3, 6)
What is the definition of multiple?
Do multiples get bigger or smaller as you go?
Skip counting - When you add the same number every single time
Multiples get bigger
Select all the factors of 12
A. 1 E. 6
B. 2 F. 9
C. 4 G. 12
D. 5
A, B, C, G
9 is a prime number
True or False (if false, explain why)
False, 9 has more than two factors factors (1, 3, 9)
Select all the composite numbers
A. 3 D. 18
B. 4 E. 24
C. 2
B, D, E
What are three common multiples of 8 and 4?
4, 8, 12, 16, 20, 24
8, 16, 24
Three common multiples are 8, 16, and 24
Kyra said that 15 is a multiple of 5. Which statement below supports her claim?
A. 15 and 5 are both odd numbers
B. 5 can be added to 10 to get to 15
C. 5 can be multiplied by 3 to get 15
C. 5 can be multiplied by 3 to get 15
A. The total number of squares in an array represent the product - True or False (if false, make the statement true)
True
Which of the following is prime?
A. 4
B. 24
C. 31
D. 15
C. 31 (it has ONLY TWO FACTORS - 1 AND 31)
Is 20 a composite number? Yes or no and why?
Yes because 20 have MORE THAN TWO FACTORS.
The factors of 20 are 1, 2, 4, 5, 10, 20
What are 2 common multiples of 3 and 9?
Multiples of 3: 3, 6, 9, 12, 15, 18
Multiples of 9: 9, 18, 27
Common multiples: 9, 18
A. The first multiple of 9 is 18 - True or false (is false explain why)
B. List 10 multiples of 9
A. False, the first multiple of 9 is 9
B. 9, 18, 27, 36, 45, 54, 63, 72, 81, 90
A. The rows and columns of an array represent the multiples of a product - True or False (if false, make the statement true)
B. What are factors?
A. False - The rows and columns represent the factors of the product
B. The numbers your multiply together to get a product
Select all that are prime
A. 11 D. 8
B. 7 E. 19
C. 2 F. 29
A, B, C, E, F
All even numbers are composite - True or false (if false, explain why)
False, 2 is the only even number that is prime.
****BONUS****
*All other even numbers are composite. Why??*
What are the common factors of 24 and 36?
Factors of 24 (1, 2, 3, 4, 6, 8, 12, 24)
Factors of 36 (1, 2, 3, 4, 6, 9, 12, 18, 36)
Common factors are: 1, 2, 3, 4, 6, and 12