Foundations of Algebra

Pemdas

100

What comes first: Multiplication, Parenthesis, Addition, or exponents

Parenthesis

200

2-(9 x 4) + 7= ?

-27

300

What letter is fourth: E, P A, D, M 

D, Division 

400

(71 x 8)/ 8 +14 -17x       x= 4

17

500

10 × 4 - 2 × (4² ÷ 4) ÷ 2 ÷ 1/2 + 9

 41

Variables

100

What are the most commonly used variables?

X and Y

200

X multiplied by 2 = ? 

2x

300

Solve for x: 4x + 9 = 12

X= 3/4

400

What do variables do in an equation? 

they are an unknown numerical value in an equation or an algebraic expression. A variable is a quantity that can be changed and is not fixed.

500

2(xy+9)-4x= X x (5+2y)

X=2

Expressions

100

4+28

32

200

What is a mathematical expression 

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division. The structure of an expression is:

300

23.5 x 4 

92

400

42/ 7 x 4 -9 + 7

22

500

(15/3 x 4 -7) + (19- 4²)

5

Math basics

100

what is 2 + 2=?

4

200

5*8=?

40

300

73- 9= 

64

400

86/4= 

21.5

500

78/6 * 4

52