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UNIT 2 EXAM
Name: _____________________
PART I: MULTUPLE CHOICE
1.
2.
3.
4.
The statement 2 + 0 = 2 is an example of the use of which property of real numbers?
(1) associative
(3) additive inverse
(2) additive identity
(4) distributive
Which property is illustrated by the equation x  ( y  z)  ( x  y)  z ?
(1) associative property of addition
(2) associative property of multiplication
(3) distributive property
(4) commutative property of addition
Which property is represented by the statement 3(2a  3b)  6a  9b ?
(1) commutative
(3) associative
(2) distributive
(4) identity
Which property is illustrated by the equation C + D = D + C
(1) commutative property of addition
(2) distributive property
(3) additive inverse property
(4) additive identity property
5.
The equation $(∆ – ♥) = $∆ – $♥ is an example of the
(1) associative law
(3) distributive law
(2) commutative law
(4) transitive law
6.
John computes the value of 8 95 in his head by thinking 8(100  5)  8  100  8  5.
Which number property is he using?
(1) associative
(3) commutative
(2) distributive
(4) closure
7.
What is the additive inverse of the expression a - b?
(1) a + b
(3) -a + b
(2) a - b
(4) -a - b
PART II: FREE RESPONSE:
Simplify: 3(2x + 5)
8.
Simplify: –4(5a – 2)
9.
Simplify: 3(4x – 2) – 6x + 3
10.
Simplify ( 8 x 2  x  4 ) + ( x  5 )
11.
What is the sum of 2m2  3m  4 and m2  3m  2 ?
12.
Simplify the expression (8x 2  6 x  5)  (6 x 2  3x  5)
13.
What is the difference when 3g 2  4 g  2 is subtracted from 7 g 2  5g  1 ?
14.