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Enriched Math Unit 5 Review				Name:

1. List all the factors of 54.

[A] 1, 54		[B] 1, 5, 11, 55

[C] 1, 2, 3, 6, 9, 18, 27, 54		[D] 1, 2, 4, 13, 26, 52, 54

2. Which of the following numbers is not composite?

[A] 9		[B] 7		[C] 25		[D] 39

3. Which of the following numbers is prime?

[A] 21		[B] 15		[C] 47		[D] 25

 Write the prime factorization of the number.

4. 231

[A] 		[B] 		[C] 		[D] 

5. 90

 Find the greatest common factor of the numbers by listing factors.

6. 60, 80		[A] 2		[B] 96		[C] 240		[D] 20

7. 104, 80, 136		[A] 8		[B] 136		[C] 40		[D] 16

 Find the LCM by listing multiples.

8. 15, 6, 8		[A] 60		[B] 40		[C] 240		[D] 120

9. 18, 24

10. Hamburger buns come in packages of 8. Hamburger patties come in packages of 10. Sam would like to buy the smallest number of hamburger buns and hamburger patties so that he will have exactly one hamburger patty per bun. How many packages of hamburger buns and hamburger patties must he buy?

 Evaluate the expression for the given value of the variable.

11. 

[A] 42		[B] 11		[C] 12		[D] 41

 Evaluate the expression for the given value of the variable.

12. 13a when 		[A] 169		[B] 26		[C] 11		[D] 15

13.   when 		[A] 96		[B] 12		[C] 8		[D] 768

14. To find the mileage, or how many miles per gallon a car can travel, you can use the expressionwhere m is the distance in miles and g is the number of gallons of gas used. Find the mileage for a car that travels 296 miles on 8 gallons of gas.

 Write the verbal phrase as a variable expression. Let x represent the number.

15. 12 is increased by a number

[A] 		[B] 		[C] 		[D] none of these

16. A number is decreased by 9

17. Which sentence is represented by “”?

[A] The number seventy is seven more than another number.

[B] A number multiplied by seven is seventy.

[C] The number seventy is ten times another number.

[D] A number increased by seven is seventy.

18. Identify the real-world phrase written as a variable expression.
  4 fewer cans than Tom collected

[A] 		[B] 		[C] 		[D] 

 Simplify the expression.

19. _14x _+10y _-4x _-5y	
[A] 		[B] 		[C] 		[D] 

20. 

[A] 		[B] 		[C] 		[D] 

21. Write and simplify an expression for the perimeter of the rectangle.

22. Use the distributive property to write an equivalent expression. Check your answer.

[A] 		[B] 		
[C] 		[D] 

23. You and three friends go to a movie. The tickets cost $4.50 each. You each buy a drink for $2.50 and a box of popcorn for $4.00. Write an expression that represents the total amount of money spent. Then evaluate the expression.

Identify the constants, coefficients, and variables in each expression.
Expression | Constant | Coefficient | Variables

24.
3x+18-2x

25.
19-6y+5g+22r-3

Reference: [4.1.1]
[1] [C]

Reference: [4.1.5]
[2] [B]

Reference: [4.1.6]
[3] [C]

Reference: [4.1.8]
[4] [C]

Reference: [4.1.9]
[5] 

Reference: [4.2.14]
[6] [D]

Reference: [4.2.15]
[7] [A]

Reference: [4.4.33]
[8] [D]

Reference: [4.4.34]
[9] 72

Reference: [4.4.42]
[10] 5 packages of hamburger buns, 4 packages of hamburger patties

Reference: [1.2.12]
[11] [C]

Reference: [1.2.13]
[12] [B]

Reference: [1.2.14]
[13] [B]

Reference: [1.2.22]
[14] 37

Reference: [7.1.2]
[15] [C]

Reference: [7.1.3]
[16] 

Reference: [7.1.11]
[17] [B]

Reference: [7.1.14]
[18] [C]

Reference: [7.2.19]
[19] [B]

Reference: [7.2.20]
[20] [D]

Reference: [7.2.24]
[21] 

Reference: [6.7.81]
[22] [D]

Reference: [6.7.87]
[23] Possible answer: