Nicole thinks of a number.
She multiplies this number by 6 then subtracts 9.
Her answer is 27. What was Nicole's original number?
Nicole's friend thinks of a number.
She then does the following operations:
Multiply by 3, subtract 5, multiply by 3 then add 45 (in that order). She finds that the number she ends up with is 14 times her original number.
What was Nicole's friend's original number?
Change NumbersEasier Questions
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:
This starter has scored a mean of 2.7 out of 5 based on 544 votes.
Too difficult? There are some simpler questions like this on the THOAN Starter page.
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.
Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.
Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
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.