Brainteasers

21st September 2001 at 01:00
Puzzles to test mathematical skills

AGE 5-7: TRACINGS: Try to draw each of these without taking your pencil from the paper or going over any line twice. In one diagram you cannot do this. Which one is it?

AGE 8-11: UPSIDE-DOWN NUMBERS: These four-digit numbers are the same when you look at the page upside down: 1961 6119 6969

What are the next six four-digit numbers after 6969 that have this property? How many upside-down numbers are there between 10000 and 20000?

Answers (on page 63): Tracings: Diagram 5 is the odd one out.

Upside-down numbers: The next upside-down number is 8008, then 8118, 8698, 8888,8968, 9006

There are 15 upside-down numbers between 10000 and 20000: 10001, 10101, 10801, 11011, 11111, 11811, 16091, 16191, 16891, 18081, 18181, 18881, 19061, 19161, 19861

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

Comments

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