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. Straws are sold in packs of 20. Grace wants 250 straws. A= the number of packs she must buy.
2. If Ben hires a motorboat at a cost of £1.50 per 15 minutes, his total cost is £9. If he starts hiring it at 2:40pm, at what time must he return it? B = the sum of the digits in your answer.
3. A recipe for ice-cream for 8 people needs 500ml of cream. If Carl wants to make enough ice-cream for 12 people, how much cream will he need? C = the sum of the digits in your answer.
4. Which three prime numbers multiply together to make 231? D=the sum of the three prime numbers.
5. 17xE = 51 (Try to do it without a calculator!)
The cache can be found at N50 45.PQR E0 12.STU where P=E, Q=C/2, R=B, S=A-10, T=D-C-E, U=A-C
You can check your answers for this puzzle on GeoChecker.com.