{"product_id":"number-pyramids-100-addition-pyramids-complete-with-solutions-9781493760817","title":"Number Pyramids: 100 addition pyramids, complete with solutions","description":"100 pyramid maths puzzles, idea for developing your addition skills. \u003cp\u003e The rules are simple: Fill the pyramid so that every square contains a number. The value of each square in the number pyramid is the sum of the two squares directly under it. \u003c\/p\u003e\u003cp\u003e Every puzzle has a completed solution towards the back of the book, so if you get stuck along the way, take a look there  \u003c\/p\u003e\u003cp\u003e All of our puzzle books are printed on very high quality paper, making the puzzle experience all the more enjoyable  \u003c\/p\u003e\u003cp\u003e For other puzzle books, click on our author page or visit www.puzzle-book.co.uk\u003cbr\u003e\u003c\/p\u003e","brand":"Createspace Independent Publishing Platform","offers":[{"title":"Default Title","offer_id":50338789458194,"sku":"9781493760817","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_d4116ce6-b363-49d2-91b0-dccfa0904f32.jpg?v=1727992319","url":"https:\/\/surprise-castle.myshopify.com\/products\/number-pyramids-100-addition-pyramids-complete-with-solutions-9781493760817","provider":"Surprise Castle","version":"1.0","type":"link"}