﻿ Prime Factorization Worksheets - Page 2 | Problems & Solutions

Prime Factorization Worksheets - Page 2

Prime Factorization Worksheets
• Page 2
11.
Identify a prime number.
 a. 23 b. 39 c. 21 d. 25

12.
Which of the following is equivalent to 8 × 8 × 8 × 8 × 8?
 a. 84 b. 85 c. 8(5) d. 58

13.
Identify the equivalent form of 11 × 11 × 11 × 11.
 a. 115 b. 11(5) c. 411 d. 114

14.
Find the prime factorization of 576.
 a. 42 × 32 b. 25 × 32 c. 26 × 32 d. 29 × 32

15.
Which of the following is the prime factorization of 220?
 a. 22 × 5 × 11 b. 22 × 3 × 11 c. 2 × 5 × 11 d. 23 × 5 × 11

16.
Which of the following is the prime factorization of 196?
 a. 2 × 73 b. 24 × 7 c. 23 × 72 d. 22 × 72

17.
Find the prime factorization of 242.
 a. 22 × 112 b. 2 × 112 c. 22 × 11 d. 2 × 3 × 112

18.
Which of the following is the expanded form of 107?
 a. 10 × 7 b. 10 × 10 × 10 × 10 × 10 × 10 × 10 c. 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 × 7 d. 7 × 7 × 7 × 7 × 7 × 7 × 7

19.
Identify a prime number.
 a. 33 b. 9 c. 57 d. 13

20.
Which of these numbers is a prime number?
 a. 121 b. 17 c. 51 d. 21

Solution:

A number that has only two factors, one and itself is called a prime number.

17 is a prime number as it has only two factors, 1 and 17.