THOAN

A Maths Starter of The Day

Blake thinks of a number. "If I double my number and add 3 the answer is 29" Jesse thinks of a number. "If I multiply my number by 6 and add 2 the answer is 128"
Sean thinks of a number. "If I add 6 to my number then divide the result by 2, the answer is 12" Seth thinks of a number. "If I multiply my number by 6 and subtract 2 then multiply the result by 6, the answer is 4 less than 712"

What numbers are they thinking about?

 

 

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Answers

Blake is thinking of 13
Jesse is thinking of 21
Sean is thinking of 18
Seth is thinking of 20

Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
Teacher, do your students have one to one access to computers?

Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning).

Here's the URL which will take
them to a student version of this activity.

http://www.transum.org/go/?to=thoan