Unit 3 Math Test

November 5, 2012Math 7

1) Using order of operations, which step would be performed first in the following expression?

4(4 - 8²) – 12 ÷ 3

A) 4 - 8 C) 12 ÷ 3

B) 8² D) 4 - 8²

2) In which step of the Order of Operations would you complete any absolute values?

F) ParenthesesG) MultiplicationH) SubtractionJ) Exponents

3) In which step of the Order of Operations would you complete any square roots?

A) ParenthesesB) MultiplicationC) SubtractionD) Exponents

4) Evaluate:

20 – (-12) ÷ 4

F) 8 H) 23

G) 17 J) 2

5) Evaluate:

-24 ÷ 2 – 3 ● 6

A) 6 C) 30

B) -6 D) -30

6) Evaluate: (-4)² + (-3) ● 2 – 8

7) Evaluate:

F) 38G) 2H) 26J) -10

2712

8) Evaluate:

12)3(2464

9) Which one of the following is NOT true?

A) -12 + 7 ● 3 = -15B) 15 - 8² = -1C) -3●(7 – 4) = -9D) -8 + 7 – 9 + 6 = -4

10) Evaluate if a= -3, b=6, and c= -9

ca – b

11) Evaluate if m=(-4) and x=(-9):

93

mx

12) Edwin was evaluating the expression below when a=4 and b=(-8) .

His work is shown in the box below.What should Edwin do to correct the error that he made? Explain using complete sentences.

13) In the expression 3x + 7, which is the coefficient and which is the constant?

Coefficient ________

Constant ________

14) Which phrase below is equivalent to 2h – 3 = -12?

F) The quotient of two and a number less three is negative twelve.

G) Three less than negative twelve is two times a number, h.

H) Three subtracted from twice a number is negative twelve.

J) The product of two and three times a number is twelve.

15) Which verbal expression below matches the algebraic expression: m ÷ 4 + 7

A) 7 more than the product of m and 4B) The quotient of four and m plus 7C) The product of m and 4 plus 7D) The quotient of m and 4 plus 7

16) Choose all expressions below that are equivalent to:

Four more than the quotient of a number and 7.

F) H)

G) J) n ÷ 7 + 4

47

n

47

n

47 n

17) Ricardo drives from Los Angeles to Phoenix in 9 hours.

If he drove 65 mph the entire time, how far did he drive?

18) Which of the following does not show the commutative property?

A) 3 + 7 = 7 + 3B) -8 ● 3 = 3 ● -8C) (4 + 6) + 9 = 4 + (6 + 9)D) (2 ● 3) ● 6 = (3 ● 2) ● 6

19) Name the property shown by the statement: ● 2 = 1

F) Additive IdentityG) Multiplicative IdentityH) Additive InverseJ) Multiplicative Inverse

20) Use the distributive property to simplify the following expression:

(4m + 6)2 - 12

21) Amelia was trying to find the mistake in her problem. What did she do incorrectly when using the distributive property? Explain in complete sentences and correct her error to find the right answer.

2(-3 + 7 – 4) = 2(-3) + 2(7) – 4 -6 + 14 – 4 8 – 4 4

22) Circle the like terms in the expression below:

4x – 3y + 6 – 12y

23) Simplify the expression below:

2a + 4 + 2a + 9

24) Simplify the expression below:

-2(2w – 5) – 4w

25) Which represents the simplified form of the expression below?

-3(6 – 2g) – 3g

A) -18 + 3g C) 18 + 3gB) -18 – 9g D) -18 – 3g

**BONUS!** Write an expression in simplest form that represents the perimeter of the polygon. SHOW YOUR WORK! 4x – 1

8x + 1

11x

8x – 4

8x