28th May 2004 at 01:00
Puzzles to test mathematical skills, set by Anita Straker. Solutions below More brainteasers on Ages 8-12. Products

Use each of the digits 1 to 6.

Put one digit in each box.

What is the smallest product you can make?

What is the biggest product you can make?

Ages 13-15. pt = Travelling in France

Michelle was travelling in a car in France. There were lamp posts at equal intervals along the road.

She noticed that the speed of the car in kilometres per hour was nine times the number of lamp posts the car passed in one minute.

How far apart were the lamp posts?

SOLUTIONS Product Smallest product: 2456 x 13 = 31 928. Biggest product: 6321 X 54 = 341 334. Travelling in France Assume the posts are a distance of d metres apart, and that Michelle passes n posts in one minute. Then the speed of the car in metres per minute is n x d. The speed of the car in kilometres per hour is 9n. So the speed in metres per minute is 9nx 100060 , or 150n. Equating these gives d = 150 metres.

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number


The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now