Prealgebra: Whole Numbers
Name: _________________________________________________________ Topic A7: Powers and Exponents | VERSION A 1.
Is 128 a perfect square? Write the exponential form for the expressions below: 6.
(18)(18)(18)(18) 2.
Is 81 a perfect square? 7.
(−17)(−17)(−17)(−17)(−17)(−17) 3.
Write 125 as a perfect cube. 8.
The fifth power of 13 4.
Write 36 as a perfect cube. 9.
The fourth power of −16 5.
Write the exponential form for 10 ∙ 10. 10. The cube of −9 www.varsitylearning.com 1 Prealgebra: Whole Numbers
Name: _________________________________________________________ Topic A7: Powers and Exponents | VERSION A 16. (4 − 5)! Evaluate. 11. −(−11)! 17. (9 − 7)! 12. −(−2)! 18. (8 − 5)! 13. 6! − 8! 19. −𝑎 ! a. If 𝑎 = 5: b. if 𝑎 = −5: 14. 8! − 2! 20. −𝑥 ! a. If 𝑥 = 7: !
15. (3 − 9) b. if 𝑥 = −7: www.varsitylearning.com 2 Prealgebra: Whole Numbers
Name: _________________________________________________________ Topic A7: Powers and Exponents | VERSION A 1.
Is 128 a perfect square? No Write the exponential form for the expressions below: 6.
(18)(18)(18)(18) 18! 2.
Is 81 a perfect square? Yes 7.
(−17)(−17)(−17)(−17)(−17)(−17) (−17)! 3.
Write 125 as a perfect cube. 5! 8.
The fifth power of 13 13! 4.
Write 36 as a perfect cube. 6! 9.
The fourth power of −16 (−16)! 5.
Write the exponential form for 10 ∙ 10. 10! 10. The cube of −9 (−9)! www.varsitylearning.com 3 Prealgebra: Whole Numbers
Name: _________________________________________________________ Topic A7: Powers and Exponents | VERSION A 16. (4 − 5)! Evaluate. 11. −(−11)! −1 −121 17. (9 − 7)! 12. −(−2)! 8 8 18. (8 − 5)! 27 13. 6! − 8! −28 19. −𝑎 ! a. If 𝑎 = 5: −125 14. 8! − 2! b. if 𝑎 = −5: 125 60 20. −𝑥 ! a. If 𝑥 = 7: −49 !
15. (3 − 9) b. if 𝑥 = −7: −49 36 www.varsitylearning.com 4