Select Page

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

This means 4 more than x.

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.

    1. 89 fewer than a
    2. 45 more than r
    3. 22 times b
    4. What is the sum of 84 and w?
    5. What is y increased by 25?
    1. Karen has h Helen has 2 more pens than Karen. Write an expression for how many pens Helen has.
    1. Max has 12 songs. His friend took m Write an expression that shows how many songs Max has now.
    1. 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. 
    1. Steffi made 62 chocolate chip cookies and w walnut cookies. How many did she make in all?
    Answer key
    1. a – 89
    2. 45 + r
    3. 22b
    4. 84 + w
    5. y + 25
    6. h + 2
    7. 12 – m
    8. 80 – b
    9. (62 + w) cookies

    Give Your Child The eTutorWorld Advantage

    Research has proven that personal online tutoring not just cements school learning, it helps build student confidence. eTutorWorld provides the best K-12 Online Tutoring Services so you can learn from the comfort and safety of your home at an affordable cost.

    Be it an exam, class test or a quiz, eTutorWorld’s Math, Science and English tutors are responsible for your academic progress. Meet your personal coach at your convenient day and time to get help for Grade 3-12 Math, Science and English subjects and AP, SAT, SSAT and SCAT Test Prep help and test practice. All our tutors are graduates and bring with them years of teaching experience to the tutoring lessons.

    Our ‘Learning by Design’ methodology makes sure that each student is at the center of the teaching-learning process. All tutoring sessions start with a question to the student ‘What do you want to learn today?’ Hence, tutors diagnose your skills and recognize your requirements before the actual tutoring happens. Post every tutoring session, an individualized worksheet is emailed to the student to assimilate learned concepts. Regular formative assessments are used to evaluate a student’s understanding of the subject.

    The state of the art technology used is stable, user friendly and safe. All you need is a computer or a tablet and an internet connection. The easy-to-use web conferencing software requires a one time download, using which the student can talk and chat to the tutor, annotate on an interactive shared whiteboard or even share documents, assignments or worksheets.

    All tutoring sessions are recorded and made available for a month so you can review concepts taught.

    Email or call our support team with any issues or questions – we are here for you 24X7.

    Also, download free printable math and science worksheets in pdf format and solve SCAT and SSAT Practice Tests online. Sign up for a Free Trial Lesson Today!

    Thousands have taken the eTutorWorld Advantage – what are you waiting for?

    © 2019 eTutorWorld - Online Tutoring and Test Prep | All rights reserved