This mathematical series of puzzle caches has questions from all levels of school education, from Key Stage 1 (age 5-7) in the first few caches, all the way up to Further Maths A-Level in the last few caches. Everybody should be able to get the solutions to the first few caches, but how far through the series will you be able to get? For a full description of the series, please see the first cache “1+1=1”. If you can’t solve a particular set of questions, try asking somebody of the appropriate age, or your friendly neighbourhood Maths teacher!
Please note that many of the caches are hidden near busy roads, so please take care when finding them, especially if you have children with you. It is worth noting that there is parking possible within a few hundred metres of all caches and a quick look on a satellite view map should show suitable places.
This cache contains questions from Key Stage 2, suitable for ages 7 - 11, school years 3 - 6.
1. Faye thinks of a number. She divides it by 9 and then adds 25 to the result. Her answer is 36. What number did she start with? A = the sum of the digits of the starting number.
2. A builder needs 7800 bricks to build a wall, but he can only buy them in containers of 500. b = the number of containers he must buy.
3. Sophie, Ella and Katie stand on some weighing scales two at a time. Sophie and Ella weigh 70kg in total. Sophie and Katie weigh 80kg in total. Ella and Katie weigh 80kg in total. How much does Katie weigh? C= the sum of the digits in your answer.
4. Find seven sixteenths of 288. D = the third digit of your answer. (Try to do it without a calculator!)
5. e= the number of factors of 180 that are between 25 and 100.
The cache can be found at N50 45.PQR E0 14.STU where P=B-10, Q=E+2, R=A-10, S=D-4, T=B-C, U=A/2
You can check your answers for this puzzle on GeoChecker.com.