Abigail thinks of a number.

She multiplies this number by 7 then subtracts 7.

Her answer is 49. What was Abigail's original number?

Abigail's friend thinks of a number.

She then does the following operations:

Multiply by 2, subtract 2, multiply by 3 then add 62 (in that order). She finds that the number she ends up with is 13 times her original number.

What was Abigail's friend's original number?

## A Mathematics Lesson Starter Of The Day

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Topics: Starter | Algebra | Functions

• Teacher, Derbyshire
•
• Used this as a plenary question to a year 8 lesson on solving equations with x on both sides. Good challenge both in setting up the equation and then solving it.
• Teacher, Surrey
•
• When checking answer, it only works on non-scientific calculators as they do not apply BIDMAS!!
• Mr J, Balshaws
•
• We found this starter very interesting. Harry really loved it!!!

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This starter has scored a mean of 2.7 out of 5 based on 585 votes.

Previous Day | This starter is for 11 April | Next Day

Too difficult? There are some simpler questions like this on the THOAN Starter page.

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## Numbers and the Making of Us

I initially heard this book described on the Grammar Girl podcast and immediately went to find out more about it. I now have it on my Christmas present wish list and am looking forward to receiving a copy (hint!).

"Caleb Everett provides a fascinating account of the development of human numeracy, from innate abilities to the complexities of agricultural and trading societies, all viewed against the general background of human cultural evolution. He successfully draws together insights from linguistics, cognitive psychology, anthropology, and archaeology in a way that is accessible to the general reader as well as to specialists." more...

 Teacher, do your students have access to computers?Do they have iPads or Laptops in Lessons? Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).

Transum.org/go/?Start=April11

Here is the URL which will take them to the Think Of A Number exercise.

Transum.org/go/?to=THOAN

Here is the URL which will you to our eQuation Generator which provides unlimited practice solving linear equations.

Transum.org/go/?to=eQuation

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