Transum Software

Factor Tree Puzzles

Fill in the partially completed factor trees in this collection of diagrams.

Instructions Exercise Puzzles Sieve Primes HCF LCM Challenge More Factors

Type whole numbers greater than one into the circles to complete the factor trees. Remember that each branch of the tree will eventually end in a prime number. You can read instructions for more information about completing factor trees.

Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong
Check Correct Wrong

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.

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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.

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"I have used your starters for 3 years now and would not have a lesson without one! Fantastic way to engage the pupils at the start of a lesson."

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"We all love your starters. It is so good to have such a collection. We use them for all age groups and abilities. Have particularly enjoyed KIM's game, as we have not used that for Mathematics before. Keep up the good work and thank you very much
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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.

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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:

Sarah Carter, Twitter

Wednesday, June 20, 2018

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.

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© Transum Mathematics :: This activity can be found online at:
www.transum.org/Maths/Activity/Prime/Tree_Puzzles.asp?

Example

If you are not familiar with factor trees I suggest you do the 'exercise' before attempting these puzzles. The following instructions explain how to do the exercise.

Instructions Instructions
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly.

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