Chapter 1 Review

Variables

100

In the expression ( T x 1 = T ) T is the ___________

Variable

200

List the order of operations

Parentheses

Exponents

Multiplication/Division from left to right

Addition/Subtraction from left to right

PEMDAS

300

Evaluate this expression:

xy + 2x = ?

x=4 y=5

(4)(5) + (2)(4) = 28

400

Evaluate:

9x + 2y²  - z

x= 3

y= 2

z=7

(9)(3) + (2)(2²) - (7) = 28

500

Evaluate:

3x²y - yz

x=6

y=9

z=4/5

(3)(6²)(9) - (9)(4/5) = 964.8

Sets of Numbers

100

Give 3 examples of natural numbers

{ 1, 2, 3, 4, ..... }

200

Is 5/9 a terminating or a non terminating decimal?

Terminating 

300

Integers are a subset of which two other categories?

Rational Numbers

Real Numbers

400

Are whole numbers a subset of natural numbers?

No

500

List all 6 sets of numbers

Natural Numbers

Whole Numbers

Integers

Rational Numbers

Irrational Numbers

Real Numbers

Postulates

100

State the postulate:

a + b = b + a

a x b = b x a 

Commutative

200

a x 1 = a is the ________ postulate

Identity

300

Name 4 of the 6 postulates

Closure

Commutative

Associative

Identity

Inverse

Distributive

400

Name the postulate illustrated by the following statement:

(14 x 12)15 = 14(12 x 15)

Associative property for multiplication

500

Is there an identity element for subtraction? If so, what is it?

Yes, 0

From Words to Symbols

100

The following key words are used to describe what operation?

difference, less than, minus

Subtraction

200

Give two key words to explain multiplication in a word problem

product, multiplied by, times, twice, doubled, tripled

300

Write the equation:

Six more than twice the number of seats

2x + 6

400

Write an equation for the following expression:

The sum of 2/3 times the number of votes, v, and 1

2/3v + 1 

500

Solve the problem:

Sam is 5 years older than Nick and Nick is 4 years older than Bobby. The sum of their ages is 46. How old is Sam?

20 years old

Random

100

Solve the problem:

-7 - 4 = ?

-11

200

Solve for c:

7c - 3 = 25

c = 4

300

Solve

- (x + 2) + 3x + 2

2x

400

 Of the three angles of a triangle, the degree measure of the second is one-half the first and the degree of the third is 15 more than the first. Find the measure of each angle of the triangle.

66 degrees, 33 degrees, 81 degrees

500

The sum of three consecutive even integers is -138. Find the integers 

-48, -46, -44