Pre Algebra Slide Show Review

Pre algebra review

By Vicki Adams

​Integers

An integer is the number zero (0), a positive natural number (1, 2, 3, . . .), or the negation of a positive natural number (−1, −2, −3, . . .).

Multiple Choice

Opposite of 142

• -142
• 142
• +142

Multiple Choice

Which integer represents a $25 gain?

• − $25

• $25

Multiple Choice

-15 + 9

• 24

• -24

• -6

• -9

Multiple Choice

Negative numbers are

• less than zero
• greater than zero

Multiple Choice

(-9)(-8)

• 72

• -72

• 56

• -56

Multiple Choice

-5 - (- 3)

• -8
• 8
• -2
• 15

Multiple Choice

Express an integer: a debt of $50

• 50
• -50

Multiple Choice

Which is not an integer?  

• -5
• 12
• 0
• -1/2

Multiple Choice

Which value is farthest from 0 on the number line?

• 10

• 7

• -12

• -10

Fill in the Blank

$$-4+3=$$  

Variables

A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable.

Like Terms

The definition of like terms in math is terms that have the same variable raised to the same power.

Multiple Choice

Identify the like terms: 4k + 6t - 45k -2a + 23

• there are no like terms

• -2a and 6t

• 4k and -45k only

• 4k and -45k: 6t and 23

Multiple Choice

combine like terms: 2r + 2 + c - 2 + r - 10

• 3r - 10 + c

• 8r - 4

• 12r + c

• 7r + 4 + r

Multiple Choice

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Multiple Choice

Simplify by combining like terms.

x + 2y + z -x + z

• 2y + 2z

• 2x + 2y + 2z

• x + 2y + z

• x + 2y + 2z

Multiple Choice

-9n + 12n + 7

• 28n

• 10n

• 21n + 7

• 3n + 7

Multiple Choice

Identify the constant(s) in the expression 14m + 18 + 6n

• m and n

• 14m and 6n

• 18

• 14 and 6

Multiple Choice

Combine like terms to simplify the expression:

$$9z\ +\ 3z\ -\ 5z$$  

• $$7z$$  

• $$17z$$  

• $$z$$  

• $$22z$$  

Coordinate plane

A coordinate plane is a flat surface with two number lines that cross at the origin. It's also known as the Cartesian plane. 

Multiple Choice

Which axis runs vertically?

• x
• Y

Multiple Choice

Which axis runs horizontally?

• x
• y

Multiple Choice

In which quadrant is the following point?
(-3, 12)

• Quadrant I
• Quadrant II
• Quadrant III
• Quadrant IV

Multiple Choice

What is coordinate R?

• (2,5)
• (0,1)
• (2,3)
• (1,0)

Multiple Choice

An _________ is the set of numbers used to locate a point on the coordinate plane.

• quadrant
• ordered pair
• origin
• y-axis

Multiple Choice

What is (0,0) called?

• The center
• The X axis
• The Origin
• The Y axis

Multiple Choice

What Quadrant is (-8,2)?

• I
• II
• III
• IV

PEMDAS

ORDER OF OPERATIONS

Fill in the Blank

Solve the following using PEMDAS

3 x 9 + 7

Fill in the Blank

$$\left(5\times6-2\right)\div\left(7-5\right)$$  

Fill in the Blank

Solve the following using PEMDAS

12 + 36 ÷ 4

Multiple Choice

Evaluate:
36 ÷ 3² + 5 ⋅ 6

• 35
• 60
• 34
• 54

Multiple Choice

Evaluate:
81 - 6 + 24

• 100
• 50
• 99
• 51

Multiple Choice

12÷2x6

• 36
• 5
• 30
• 1

Multiple Choice

What does the M stand for in PEMDAS?

• Mom

• Multiply

• McIntyre

• Money

Multiple Choice

(10+13) x 3=?

• 69

• 13

• 68

• 14

Multiple Choice

True or false:
Addition ALWAYS comes before subtraction.

• True
• False

Multiple Choice

Solve This Expression
( 8 x 4 ) + 13

• 43
• 44
• 45
• 46

Multiple Choice

Write each product using an exponent. 
7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 

• 7⁷
• 7⁸
• 8⁷
• 7⁹

Multiple Choice

15 x 19 + 18 ÷ 6 =

• 250

• 199

• 400

• 288

Multiple Choice

Which number is the EXPONENT?
4^{2 =} 16

• 4
• 2
• 16

Multiple Choice

Anything raised to a power of zero is always: 

• 0
• 1
• itself
• negative