
1. Is 24 an even or an odd number?
A) Even
B) Neither
C) Odd

2. Which of the following is an odd number?
A) 4
B) 13
C) 126
D) 12

3. The factors of 24 are...
A) 1, 2, 3, 4, 5, 6, 10, 12, 24
B) 2, 4, 6, 8, 10, 12, 14, 24
C) 1, 2, 3, 4, 5, 6, 10, 12, 24
D) 1, 2, 3, 4, 6, 8, 12, 24

4. The factors of 36 are....
A) 1,2,3,4,6,9,12,18,36
B) 36,72,108...
C) 1,2,3,4,5,6,9,12,18,36
D) none of the above

5. The prime factorization of 24 is...
A) 28
B) 23 x 3
C) 22 x 3
D) 2 2 x 6

6. 72 =
A) 9
B) 72
C) 14
D) 49

7. 92 =
A) 92
B) 81
C) 18
D) 11

8. 62 =
A) 36
B) 8
C) 62
D) 12

9. 52 =
A) 7
B) 10
C) 52
D) 25

10. What is the prime factorization of 21?
A) 42
B) 2 x 32
C) 21
D) 3 x 7

11. What is the prime factorization of 81?
A) 9 x 9
B) 34
C) 2 x 18
D) 33

12. Which number is a composite number?
A) 31
B) 5
C) 25
D) 13

13. A prime number always...
A) is an even number
B) is divisible by 3
C) is an odd number

14. What is the prime factorization of 64?
A) 128
B) 2x32
C) 26
D) 1,2,4,8,16,32,64

16. What is the prime factorization of 100?
A) 200
B) 1,2,4,5,10,20,25,50,100
C) 22x52
D) 4x25

18. What is the prime factorization of 25?
A) 1,5,25
B) 25
C) 52
D) 50

19. What is the prime factorization of 30?
A) 2x3x5
B) 60
C) 3x10
D) 1,2,3,5,6,10,15,30

20. What is the prime factorization of 48?
A) 4x12
B) 24x3
C) 23x6
D) 2x24
1. Which of these is NOT a prime number?
a. 11
b. 12
c. 13
d. 17
3.
means
a. 1/2 of 17
b. 3 x 4
c. 3 x 3 x 3 x 3
d. 7
5. The number
is read
a. Seven to the fourth power
b. Seven times four
c. Seven plus four
d. Seven divided by four
6. Prime factorization is
a. When you write a whole number as a product of all prime numbers
c. When you change a number into all exponents
7. If a number ends in 5, it is
a. Always a prime number
b. Divisible by two
c. Divisible by 10
d. Divisible by 5
10. What is the Prime factorization of the number 64?
a. 2 X 6
b.
1. Prime Numbers are
a. All numbers less than 100
b. Numbers which are a product of 1 and the number with no other products
c. Even numbers except for 2
d. Numbers which contain a decimal
2. 1,2,3,5,7 are examples ofa. Odd numbers counting by twos
b. Even number counting by twos
c. The prime numbers which are less than 10
3. Prime Factorization is when you
a. Represent a number by it's factors
b. Represent a number by it's elements
c. Represent a number by it's factors which are all prime numbers.
4. 2 X 2 X 2 X 2 X 6 will be easier to write and understand when written as
a. Factors
b. Exponents
c. Squares
d. Cubes
7. Consider this factorization of the number 12. Which number is best for the question mark
space?
a. 1
b. 2
c. 4
d. 6
8. Consider this factorization of 45. What is wrong with it?
a. The math is not correct
b. Not all of the numbers in the bottom row are prime numbers
c. Nothing is wrong.
9. Consider this factorization. What is wrong with it?
a. The Math is not correct
b. Not all of the numbers in the bottom row are prime numbers
c. Nothing is wrong
10. If a number ends in zero, it is divisible by
a. 2
b. 5
c. 10
d. all of these