# Writing Basic Algebraic Expressions with Variables

Home | Online Math Tutoring | 6th Grade Math Tutoring | **Writing Basic Algebraic Expressions with Variables**

#### What is a variable in an expression?

An **algebraic** **expression** has both numbers and** variables** together with at least one arithmetic operation.

**Now when we represent both variable and numbers in an expression this is what it looks like:**

*x ***+ 4**

#### How do you write an expression in math?

Let’s say for example, Jim works in a departmental store and gets paid $50 per day and when he lifts boxes from the store room he gets paid tips for that. Now, the number of boxes he lifts depends on the extra time he gets every day.

So, now amount Jim gets paid everyday = {50 + tips}.

On Monday Jim gets $30 as tips and $50 as the sales guy so he earns … $80 in all.

On Tuesday he gets $15 as tips and $50 as the sales guy so he earns …… $65 in all.

So, tips is the variable.

So, instead of writing tips in every case we use an alphabet which in math we call as **a variable**.

**($50 + b)** is the amount he earns every day.

#### What is an example of algebraic expression?

**Check Point**

**Write the following in algebraic form.**

- 89 fewer than
*a* - 45 more than
*r* - 22 times
*b* - What is the sum of 84 and
*w*? - What is
*y*increased by 25?

- Karen has
*h*Helen has 2 more pens than Karen. Write an expression for how many pens Helen has.

- Max has 12 songs. His friend took
*m*Write an expression that shows how many songs Max has now.

- Jen earned 80 points in the Science project. Bruno earned
*b*fewer points than Jen. Write an expression that shows how many extra points Bruno earned.

- Steffi made 62 chocolate chip cookies and
*w*walnut cookies. How many did she make in all?

##### Answer key

*a*– 89- 45 +
*r* - 22
*b* - 84 +
*w* *y*+ 25*h*+ 2- 12 –
*m* - 80 –
*b* - (62 +
*w*) cookies

Home

Fall 2020

Tutoring

Test Prep

Worksheets

Pricing

About Us

Blog

Free Trial

Login

Terms of service

Privacy Policy

Money Back Guarantee

Technical requirements

FAQs

Job Opportunities

Sitemap

**Connect with us**

+1-269-763-4602

+1-269-763-5024

**Online test prep and practice**

SCAT

CogAT

SSAT

ISEE

PSAT

SAT

ACT

AP Exam

**Science Tutoring**

Physics Tutoring

Chemistry Tutoring

Biology Tutoring

**Math Tutoring**

Pre-Algebra Tutoring

Algebra Tutoring

Pre Calculus Tutoring

Calculus Tutoring

Geometry Tutoring

Trigonometry Tutoring

Statistics Tutoring

©2020 eTutorWorld Terms of use Privacy Policy Site by Little Red Bird

©2020 eTutorWorld

Terms of use

Privacy Policy

Site by Little Red Bird