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- 1. Multiple Choice
Prime Numbers...
are the same as composite numbers
have only one factor pair: 1 and the number itself
have at least more than 1 factor pair
- 2. Multiple Choice
Composite Numbers...
are the same as prime numbers
have only one factor pair: 1 and the number itself
have more than 1 factor pair (ex. the factors of 10 are 1, 2, 5, and 10)
are the same as even numbers
- 3. Multiple Choice
Prime Factorization is...
finding all the prime numbers that multiply together to equal a given number
have only one factor pair: 1 and the number itself
have more than 1 factor pair
(ex. the factors of 30 are 1, 2, 3, 5, 6, 10, 15, & 30)
the biggest factor shared between 2 or more numbers
- 4. Multiple Choice
Greatest Common Factor (GCF) is...
finding all the prime numbers that multiply together to equal a given number
the smallest number that is a shared multiple of 2 or more numbers
when you list all the factor pairs of a number from smallest to biggest
the biggest factor shared between 2 or more numbers
- 5. Multiple Choice
Least Common Multiple (LCM) is...
when numbers have more than 1 factor pair
the smallest number that is a shared multiple of 2 or more numbers
when numbers have only one factor pair: 1 and itself
the biggest factor shared between 2 or more numbers
- 6. Match
Sort the numbers
*Hint: use your prime numbers chart!
19
Prime Number
0
Composite Number
24
Neither Prime nor Composite
- 7. Multiple Choice
What is the prime factorization of 40?
2 x 2 x 2 x 5
2 x 2 x 3
5 x 8
2 x 2 x 2 x 2 x 5
- 8. Multiple Choice
What is the prime factorization of 84?
7 x 12
2 x 2 x 3 x 5
2 x 2 x 3 x 7
2 x 2 x 2 x 2 x 2 x 2
- 9. Multiple Choice
What is the prime factorization of 144?
2 x 2 x 2 x 2 x 9
2 x 2 x 2 x 2 x 5
12 x 12
2 x 2 x 2 x 2 x 3 x 3
- 10. Drop Down
39 is an example of a (a) number
compositeprimeeven - 11. Drop Down
89 is an example of a (a) number
primeoddcomposite - 12. Multiple Choice
Use prime factorization to find the GCF of 18 and 45...
GCF = 15
GCF = 3
GCF = 6
GCF = 9
- 13. Multiple Choice
Use prime factorization to find the GCF of 36 and 54...
GCF = 18
GCF = 9
GCF = 6
GCF = 1,944
- 14. Multiple Choice
Use prime factorization to find the GCF of 60 and 90...
GCF = 10
GCF = 30
GCF = 15
GCF = 6
- 15. Multiple Choice
Use prime factorization to find the LCM of 16 and 20...
LCM = 80
LCM = 4
LCM = 60
LCM = 320
- 16. Multiple Choice
Use prime factorization to find the LCM of 36 and 24...
LCM = 120
LCM = 12
LCM = 72
LCM = 108
- 17. Multiple Choice
Use prime factorization to find the LCM of 56 and 70...
LCM = 14
LCM = 168
LCM = 210
LCM = 280
- 18. Multiple Choice
Identify whether to find GCF or LCM to solve the word problem:
Bus X arrives at its stop every 48 minutes. Bus Y arrives at its stop across the street every 60 minutes. What is the smallest amount of time before both buses arrive at the same time again?
192 minutes
12 minutes
240 minutes
2,880 minutes
- 19. Multiple Choice
Identify whether to find GCF or LCM to solve the word problem:
April is putting together party bags. She splits 72 Reese's Cups and 90 KitKats into bags. There is no candy left over. What is the greatest number of party bags April can make?
18 bags
9 bags
21 bags
15 bags
- 20. Drop Down
Your Prime Factorization test is (a) !
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