Algebraic Expressions

Vocabulary

100

A letter or symbol that represents an unknown amount.

variable

200

What is an algebraic expression?

An expression that involves variables, numbers, and operations.

300

5 (8 + 4). What property can you use to solve this?

Distributive Property

400

gap between axons and dendrites

synapse

500

takes information AWAY from the cell body

axons

Algebraic Expressions

100

What does "a number plus four" look like?

n + 4

200

Write: "20 minus a number"

20 - n

300

"4 times a number". Give two ways it can be written.

(4)(n) or 4n

400

Write:  "a number divided by 5"

n/5    

500

Write 5k + 9 in words.

five times a number plus 9

Order of Operations

100

5 x 4 + (8 -1)

27

200

6 X 3 - 8 + 4 X 3

22

300

(7 X 5) - 35 + 4 x 2

8

400

15 X 1 + (8 x 10) - 6

89

500

( 9 x 5) + 8 x 5 - 4

81

Substitution

100

n + 6, n= 10

16

200

9 + n, n = 20

29

300

15 - 2n, n= 3

9

400

5n-6, n=6

24

500

15 (n + 1) + 6, n = 9

156

Use Distributive Property

100

5 ( 10 + 8) =

90

200

2 ( 9 + 8)

34

300

15 (10 + 5)

225

400

How can you write the following using distributive property? 5 x 209?

5(200+9)

500

20 ( 5 + 3 + 10)

360