Get the best experience in our app Enjoy offline reading, category favourites, and instant updates - right from your pocket. Download the App Maybe later Home Archived Brainteasers Back Brainteasers 17th September 2004, 1:00am Tes Editorial Share Brainteasers https://www.tes.com/magazine/archive/brainteasers-59 Copy Link Puzzles to test mathematical skills, set by Anita Straker. Solutions below More brainteasers on www.tes.co.ukteacherbrainteasers Age 7 to 10 Mrs Singh spent pound;10 on 60p and 70p stamps. She bought 3 times as many 60p stamps as 70p stamps. How many of each kind of stamp did Mrs Singh buy? Age 11 to 14 Consecutive integers The consecutive integers 5, 6, 7 and 8 have a product of 1,680 and a sum of 26. The product of 4 consecutive integers is 358,800. What is the sum of these 4 integers? SOLUTIONS Mrs Singh’s stamps Mrs Singh bought 12 stamps at 60p and 4 stamps at 70p. Since she bought 3 60p stamps for every one 70p stamp, the cost of one lot of 4 stamps is pound;2.50. For pound;10, she can buy 4 lots of 4 stamps. Consecutive integers The integers are 23, 24, 25 and 26, which sum to 98. Want to keep reading for free? Register with Tes and you can read five free articles every month, plus you'll have access to our range of award-winning newsletters. Register Log in Register with Tes and you can read five free articles every month, plus you'll have access to our range of award-winning newsletters. More information Keep reading for just £4.90 per month /per month for 12 months You've reached your limit of free articles this month. Subscribe for £4.90 per month for three months and get: Unlimited access to all Tes magazine content Exclusive subscriber-only stories Award-winning email newsletters Subscribe now You've reached your limit of free articles this month. Subscribe for £4.90 per month for three months and get: Unlimited access to all Tes magazine content Exclusive subscriber-only stories Award-winning email newsletters More information Read more Teacher interview questions: what will I be asked? Tes Editorial • 10th October 2025 Sats week: key test dates for 2026 Tes Editorial • 1st October 2025 5 top Tes articles for school leaders Tes Editorial • 19th August 2025 5 top Tes articles on the science of learning Tes Editorial • 12th August 2025 Recent Most read Most shared Cambridge International issues November A-level results News 9 January 2026 NEU boss: ‘We will absolutely strike’ over teacher working hours News 9 January 2026 Why MAT leaders should welcome inspections Analysis 9 January 2026 It’s ‘impossible’ to take on special schools, says MAT News 6 January 2026 The real reason teachers are leaving? Systemic failure Analysis 8 January 2026 Employment Rights Act: what does it mean for teachers and schools? Analysis 7 January 2026 DfE to push ahead with MAT inspections News 7 January 2026 The real reason teachers are leaving? Systemic failure Analysis 8 January 2026 DfE wants ‘ladder of support’ for pupils with SEND News 8 January 2026
