1. Activity 2 Practice

2. 1. Which of the numbers below is NOT a prime number?13 37 39 47

3. 2. Which is the prime factorization of 81?
1 X 81
3 X 27
9 X 9
3 X 3 X 3 X 3

4. 3. Which of the following is a prime number between 80 and 90?81 88 83 91

5. 4. 2 X 3 X 4 is the prime factorization of what number?24 9
234
It isn’t a prime factorization of any number.

6. 5. What is the prime factorization of 36?
6 X 6
2 X 2 X 3 X 3
2 X 3 X 6
None of the above

7. 6. Which of the following is a composite number?43 75
101 23

8. 7. Which of the following numbers equals 25 x 32?90
192
240
288

9. 8. Evaluate the expression 53 ?15 30
125
None of the above

10. 9. What is the prime factorization of 120?
23 x 3 x 5
2 x 2 x 3 x 5
22 x 32 x 5
3 x 8 x 5

11. 10. Which equation is true?
16 = 61
23 = 32
24 = 42
34 = 43