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Name _______________________________________ Date __________________ Class _________________
UNIT
1A
Numbers and Expressions
Test Review
1. Define whole numbers_______________________________________________
_____________________________________________________________________
2. Is the set of integers closed under addition?__________________________
3. What is 2561/2? _________________________________
4. 6251/2 is equal to which of the following? (Circle answer)
A 15
C 312.5
B 25
D 35
5. Evaluate: 1252/3 + 813/2.____________________________
6. The equation t = 0.25d1/2 represents the number of seconds, t, that it takes an
object to fall a distance of d feet. How long does it take an object to fall 441ft?
7. Does -5 1/5 belong to each of the following sets?
A Whole numbers
Yes
No
B Integers
Yes
No
C Rational numbers
Yes
No
D Real numbers
Yes
No
8. Which statement shows that the set of irrational numbers is not closed under
multiplication? (Circle correct answer)
A 8 x 14 = 112
C. π ∙ 1 = π
B √3 x 2 =2√3
D √2 ∙ √2 = √4
9.Is the set {-3, 0, 3} closed under addition? Explain__________________________
_____________________________________________________________________
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Name _______________________________________ Date __________________ Class _________________
In questions 10-12, list ALL the sets of numbers to which each number belongs.
10. 18/6
11. -33
12. 8π
13. Find the value of 4x3/4 if x = 81. ____________________________
14.
Find the value of 0.2y2/3 if y =64_______________________________
15. Show that (271/3)4 and (274)1/3 are the same_________________________
_____________________________________________________________
______________________________________________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
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For questions 16-19, tell which number property from this list is being shown.
(Commutative of Addition, Commutative of Multiplication, Associative,
Distributive)
16.
-33 + (55 + 19) = (-33 + 55) + 19_________________________________
17. 35 x 9 = 9 x 35 __________________________
18. -55(2 + x) = -110 + -55x__________________________
19. 2/3 + 1/6 = 1/6 + 2/3 _______________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
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