Sean thinks of a number.
He multiplies this number by 9 then subtracts 6.
His answer is 57. What was Sean's original number?
Sean's friend thinks of a number.
He then does the following operations:
Multiply by 2, subtract 5, multiply by 3 then add 45 (in that order). He finds that the number he ends up with is 12 times his original number.
What was Sean's friend's original number?
Change NumbersEasier Questions
Topics: Starter  Algebra  Functions
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Previous Day  This starter is for 11 April  Next Day
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=April11 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to the Think Of A Number exercise.
Here is the URL which will you to our eQuation Generator which provides unlimited practice solving linear equations.