Math

Translating Algebraic Expressions

By: Darala Hartwell

Remember:1. A variable is a letter used to represent an unknown value.2. A numerical expression includes numbers and operations.3. An algebraic expression contains variables, numbers and operations.

a

b

x

y

What am I?

What do I represent?

How did Iget here?

How did Iget here?

I am so unknown

I am so unknown

Variables are letters that represent unknown values.

Numerical Expressions

Numerical expressions include numbers and operation symbols.

Algebraic Expressions

An algebraic expression includes:

Numbers Operations and Variables

Let’s look at examples of a numerical expressions:

12 + 3

32 8

7(4)

Let’s look at examples of algebraic expressions.

x - 4

2(5+n)

b2

Equations

Algebraic expressions like phrases in English are incomplete.An equation, like a sentence, is complete. You will notice theinclusion of a very special symbol.

An equation is made up of numbers, variables, and an equal sign.

3b + 5 = 26

Rewrite these verbal expressions as algebraic expressions.

5. Four less than a number

4. 56 increased by twice a number

3. n to the seventh power

2. the product of 15 and some number

1. the sum of s and 12

s+12

15n

56+2a

n-4

n7

Let’s write equations for these sentences.

1. Forty-three less than n is equal to 35.

n – 43 = 35

2. Seven more than y is 13.

y + 7 = 13

The End