First Year Math Exam

Real Numbers and Measurements
S.Y 2010 – 2011

Name: ___________________________ Date: ______________
Year and Section _____________________

I. Encircle the letter of the correct answer.

1.) Which of the following is an irrational numbers?
a. 0.768768…. c. 0.7687689…
b. 0.67896789 d. 0.777……

2.) What property is shown in: ( a x b ) x c = a x ( b x c)
a. Commutative Property for Multiplication   c.   Distributive Property
b. Associative Property for Addition   d. Associative property for Multiplication

3.) Which equation below represents commutative property of addition?
a. (a + b) + c = a + (b + c) c. a + b = b + a
b. a + c   = a = 0 + a d. a x b = b x a

4.) What is the square root of 117?
a. 3 √3 b. 10.81… c. 10.7 d.   none of   the above

5.) What type of number was the answer of question number 4.
a. rational number c. complex number
b. irrational number d. special number

6.) What is the definition of the perimeter?
a. it is the total length of all sides of a shape.
b. it is the total amount of space of a shape.
c. it is the total surface area of a shape.
d. both a and b.

7.) If π is an irrational number and 6 is a rational number, what can be said about 6 + π?
a. It is a rational number c. It is either a rational or an irrational number.
b. It is an irrational number d. It is both a rational and irrational number.

8.)   Determine which statement is not true?
a. l -13 l > l -10 l c. 3 = l -3 l
b. -1/2 = l -1/2 l d. -1/5 > -1

II. Write your answers on the blank.

A. State the property of the following:
1.) 2 + ( 3 + 5 ) = 2 + ( 3 + 5 )___________________________
2.) ( 6 x 3 ) x 5 = 6 ( 3 x 5 ) _____________________________

B. Simplify the indicated operations. (2pts each)
1.) ( -5) + ( -12 ) + 35 = ___________
2.) -7 – ( -8 ) – (5) =   __________
3.) ( -5 ) + 15 – ( - 9 + 4 ) = ____________
4.) [ (-4) + (-13) ] +   [   (-9) – (-9) ] = __________
5.) (2) ² + (-4) ²     =... [continues]

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