Tool TriangleLevel 1

Drag the numbers into the yellow cells so that the totals along each side of the triangle are the same.

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This is Tool Triangle level 1. You can also try:
Level 2 Level 3 Level 4 Level 5 Random

There is a printable worksheet to go with this activity.

Worksheet

 

What if there were nine digits to place on the sides of the triangle? See Triside Totals:

 

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Comment recorded on the 14 September 'Starter of the Day' page by Trish Bailey, Kingstone School:

"This is a great memory aid which could be used for formulae or key facts etc - in any subject area. The PICTURE is such an aid to remembering where each number or group of numbers is - my pupils love it!
Thanks"

Comment recorded on the 19 November 'Starter of the Day' page by Lesley Sewell, Ysgol Aberconwy, Wales:

"A Maths colleague introduced me to your web site and I love to use it. The questions are so varied I can use them with all of my classes, I even let year 13 have a go at some of them. I like being able to access Starters for the whole month so I can use favourites with classes I see at different times of the week. Thanks."

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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, January 6, 2020

"My tip for doing Level 4 and higher levels is to first only consider the units digit, effectively working in mod 10. This makes it easier to find a pattern that works and then it is not too difficult to find the actual solution."

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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