{"product_id":"1260515","title":"Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything","description":"Unlock the power of quick, practical calculations with this insightful guide by Rob Eastaway. Perfect for those who want to enhance their numerical intuition, this book offers clever techniques to estimate and solve a variety of everyday problems with ease. Whether you're looking to quickly assess a financial decision, estimate travel time, or gauge the size of a crowd, these methods will empower you to make informed judgments without complex tools. Embrace the art of mental math and discover how a few simple tricks can transform your understanding of numbers in daily life.","brand":"Chalkys.com","offers":[{"title":"Default Title","offer_id":54264722850177,"sku":"1260515","price":13.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/8043\/1219\/files\/51s9MjgRXHL._SL1500.jpg?v=1745725425","url":"https:\/\/chalkys.com\/products\/1260515","provider":"Chalkys.com","version":"1.0","type":"link"}