Prime Factorizations

Pre Test

1.      Which of these is NOT a prime number?

a.     11

b.      12

c.      13

d.      17

2.      What is the only prime number that is an even number?

a.      2

b.      30

c.      100

d.      10000

3.      means

a.      1/2 of 17

b.      3 x 4

c.      3 x 3 x 3 x 3

d.      7

4.     When a number is written like this: , it is called

a.      A prefix

b.      A suffix

c.      An exponent

d.      A multiplier

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

b.      When you make up problems dealing witha number for math practice

c.      When you change a number into all exponents

d.      None of the above

7.      If a number ends in 5, it is

a.      Always a prime number

b.      Divisible by two

c.      Divisible by 10

d.      Divisiible by 5

8.      П Consider this factorization of the number 48. Is there anything wrong with it?

a.      The numbers on the bottom row are not all prime numbers

b.      The math is not good

c.      Both of these

d.      Nothing is wrong

9.      Consider this factorization of the number 77. What is wrong with it?

a.      The numbers on the bottom row are not all prime numbers

b.   The math is not good

c. Both of these

d. Nothing is wrong

10.  П What is the Prime factorization of the number 64?

a.      2 X 6

b.

c.    6 x 8

d.   None of these