Algebra 1AB Review

Real Number System

100

Is 0 (zero) a natural counting number, or is it a whole number?

Whole.

Zero is not a counting number

200

True or False:

1/2 is an integer

Extra Credit: Tell me what kind of number it is

False. 

Extra Credit: It is a rational number

300

True or False:

Integers include Negative Numbers

True!

Integers are positive or negative whole numbers

..., -2, -1, 0, 1, 2, ...

400

Is pi a rational number?

Nope. It's irrational

500

Give an example of a rational number

(Any fraction or repeating decimal)

Exponents

100

Which number is the exponent?

5³

3

200

Exponents show repeated:

Multiplication OR Addition

Multiplication

300

What is 3 x 3 x 3 x 3 x 3 in exponential form?

3⁵

400

Write 4⁵ in expanded form

4 x 4 x 4 x 4 x 4

500

What is 3⁴ as a whole number?

81

Scientific Notation

100

Positive exponents show big or small numbers?

Big

200

Negative Exponents show big or small numbers

Small

300

Write 1234 in scientific notation

1.234 x 10 ³

400

Write 0.00123 in scientific notation

1.23 x 10^-3

500

Write 1.234 x 10⁶

1,234,000

Order of Operations

100

Define each letter of PEMDAS

Parentheses Exponents Multiplication Division Addition Subtraction

200

What do I do first:

3 * 4 - 6 + (2 * 3)

Parentheses (2*3)

300

What do I do first?

25/5 + 4 * 2 -2

Division:

25/5

400

Simplify:

3+ (2+2) - 1

7

500

Simplify :

3² + 10 - 3*2

13

Solving Equation

100

1. What is the opposite of addition?

2. What is the opposite of multiplication?

1. Subtraction

2. Division

200

Solve:

x+3=7

x=4

300

3x=18

x=6

400

2x+1=9

x=4

500

-3x+1=19

x= -6