Transum Software

Factor Trees

Create factor trees to find the prime factors of the given numbers.

Exercise Puzzles Challenge 1 Challenge 2 Challenge 3 Challenge 4 Advanced Help More

Type whole numbers greater than one into the circles that multiply together to give the number in the circle above them. Each branch of the tree will eventually end in a prime number. You can read the full instructions for more information about this activity.

18

Check Correct Wrong

30

Check Correct Wrong

45

Check Correct Wrong

60

Check Correct Wrong

68

Check Correct Wrong

102

Check Correct Wrong

104

Check Correct Wrong

150

Check Correct Wrong

164

Check Correct Wrong

170

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.

Why am I learning this?

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?

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"Thanks very much for this one. We developed it into a whole lesson and I borrowed some hats from the drama department to add to the fun!"

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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.

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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.

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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:

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Example

Instructions Instructions

Here's a reminder of what defines a prime number:

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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