Transum Software

Missing Lengths

Find the unknown lengths in the given diagrams (not drawn to the same scale) and learn some algebra at the same time.

Level 1 Level 2 Level 3 Level 4 Level 5 Perimeters Area Maze Description More Algebra

a = Correct Wrong

b = Correct Wrong

c = Correct Wrong

d = Correct Wrong

e = Correct Wrong

f = Correct Wrong

Check

This is Missing Lengths level 1. You can also try:
Level 2 Level 3 Level 4 Level 5 Perimeters Area Maze

 

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

Transum.org

This web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available.

Please contact me if you have any suggestions or questions.

Email address

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 3 October 'Starter of the Day' page by S Mirza, Park High School, Colne:

"Very good starters, help pupils settle very well in maths classroom."

Comment recorded on the 1 February 'Starter of the Day' page by Terry Shaw, Beaulieu Convent School:

"Really good site. Lots of good ideas for starters. Use it most of the time in KS3."

Featured Activity

Lemon Law

Lemon Law

A fascinating digit changing challenge. Change the numbers on the apples so that the number on the lemon is the given total. Can you figure out, by understanding place value, how this works?

Answers

There are answers to this exercise but they are available in this space to teachers, tutors and parents who have logged in to their Transum subscription on this computer.

A Transum subscription unlocks the answers to the online exercises, quizzes and puzzles. It also provides the teacher with access to quality external links on each of the Transum Topic pages and the facility to add to the collection themselves.

Subscribers can manage class lists, lesson plans and assessment data in the Class Admin application and have access to reports of the Transum Trophies earned by class members.

If you would like to enjoy ad-free access to the thousands of Transum resources, receive our monthly newsletter, unlock the printable worksheets and see our Maths Lesson Finishers then sign up for a subscription now:

Subscribe

Go Maths

Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

Maths Map

Are you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.

Teachers

If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows:

Transum,

Monday, February 2, 2015

"This activity provides a nice mixture of geometry and algebra with a numeracy prerequisite. It can be used as stand-alone exercise or used as an introduction to a lesson on equations or finding the areas of composite shapes. Refreshing this page will provide you with a different set of questions."

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

Apple

©1997-2019 WWW.TRANSUM.ORG

Description of Levels

Close

Close

Level 1 - Situations suggesting equations of the form x + 6 = 20

Level 2 - Situations suggesting equations of the form 4x = 20

Level 3 - Situations suggesting equations of the form 3x + 4 = 25

Level 4 - Situations suggesting equations of the form 3x + 2 = 2x + 12

Level 5 - Situations suggesting equations of the form 4x + 30 = 10 + 5x + 12

Perimeters - Questions about the perimeters and areas of polygons given as algebraic expressions.

Area Maze - More advanced missing-length questions involving area.

More on this topic including lesson Starters, visual aids, investigations and self-marking exercises.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

Log in Sign up

Curriculum Reference

See the National Curriculum page for links to related online activities and resources.