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Quiz:

Phase: Simplify each expression (Please Excuse My Dear Aunt Sally)

Questions:

1. x + 5y – 3x
2. 2p -9p2 + 8r2 + 2p2
3. 7s + (4s +2t) + 10t
4. 2b3 + 6c –b3 -5c
5. j + k + L -2j – 3k – 4L
6. 2(x + y) – 5x
7. wv + w(v – 1)
8. 6f5g  + 3f2 -4g -3f5g  + g
9. -9a2+ 5(2b + 3) – b
10. 4(k + m) -9(3k -2m) + k + m

Answer Key:

1. x + 5y – 3x

x- 3x = 2x

Answer: 2x + 5y

1. 2p -9p2 + 8r2 + 2p2

-9p2 + 2p2 = -7p2

Answer: 2p -7p2 + 8r2

1. 7s + (4s +2t) + 10t    (Parentheses has nothing to multiply with, so you minus)

7s - 4s + 2t -10t

Answer = 3s + 18t

1. 2b3 + 6c –b3 -5c (+, - sign is important (which is next to calculation)

2b3 – b3 = b3

6c- 5c = c

Answer: b3 + c

1. j + k + L -2j – 3k – 4L

j – 2j = j

k – 3k = -2k

l – 4L = -3L

Answer: J - 2K - 3L (+/- signs are important)

1. 2(x + y) – 5x

2x + 2y – 5x

2x – 5x = -3x

Answer: -3x + 2y

1. wv + w(v – 1)  (parenthesis first - multiply)

wv + wv – w

Answer: 2wv

1. 6f5g  + 3f2 -4g -3f5g  + g

6f5g -3f5g = -3f5

-4g + g = -3g (decrease with positive)

Answer: -3f5g + 3f2 -3g

1. -9a2+ 5(2b + 3) – b (parenthesis first - multiply)

5(2b) = 10b

10b - b = 9b

+ 5(3) = 15

Answer: -9a2 + 9b +15

1. 4(k + m) -9(3k -2m) + k + m

4k – 27k = -27k

-27k + k  = - 28k

4k – 28k = -22k

4m + 18m + m = 23m

Answer: -22k + 23m