Unit 3 Review Flashcards

1

What is simplifying?

Halving a number
Adding only variables together
Combining like terms
Adding numbers together

2

Solve: 2(8 x 2)

18
32
16
40

3

Write an expression for 13 less than y

y-13
y(13)
y13
y-13

4

What does the "E" in PEMDAS stand for?

Equation
Emphasize
Exponent
Eggs

5

Simplify: 3y+3+2y

8y
6y+2
3y+5
5y+3

6

Simplify: 8x-1-2x

5x
6x-1
3x
5x+1

7

What is an exponent?

A variable
An expression
The number telling us how to multiply the base
The base of a number

8

What is an expression?

A math problem with terms and operations
An equation
A formula
A mathematical way of describing length

9

What are terms?

parts of a formula
parts of an expression
another word for variables
the answers to a math problem

10

Solve: 9 x 3 +1

36
19
28
27

11

Expressions always have an equals sign

True
False

12

What is subsitution?

Replacing variables with values
Making a new problem
Adding in new variables
Changing the letter of the variable

13

Write an equivalent expression for 2(x+3)

2x+6
8x
10x
2x+3

14

What is 2 squared?

8
10
4
12

15

What is 3³

35
27
9
23

Unit 3 Review

Questions 15

Unit 3 Review

Questions 15