Numerical & Algebraic Expressions-Giada

Numerical or Algebraic

100

What does it mean for an expression to be algebraic?

A. Has numbers, operations, and letters ( or variables)

B. Has only numbers and operations.

A. Has numbers, operations, and letters (or variables)

200

What does it mean for an expression to be numerical?

A. Has numbers, operations, and letters ( or variables)

B. Has only numbers and operations.

B. Has only numbers and operations

300

Is the following expression numerical or algebraic? 3x+1

Algebraic

400

Is the following expression numerical or algebraic? 54-3

Numerical

500

Algebraic expressions and numerical expressions have many similarities. What is the one difference between algebraic expressions and numerical expressions?

Algebraic has letters (or variables)

Solving Algebraic

100

x+2 if x=3

5

200

x - 3 if  x=3

0

300

8x if x=6

48

400

12/x if x=2

6

500

6 + x - 1 if x=3

8

PEMDAS: Numerical Expressions

100

3+2-1

4

200

15-2x4

7

300

3 + 81/9

12

400

 10 x (4+5) - 12

78

500

[3(4-2)]+ 3 x 7

27

PEMDAS: Algebraic Expressions

100

x-1 ; x=2

1

200

2x-3 ; x=3

3

300

3(x-2) ; x=3

3

400

-7(x-1) ; x=3

-14

500

2(x+2)-3 ; x=-1

-1