{"product_id":"subtraction-drills-ebook","title":"Subtraction Drills Ebook","description":"Practice the basic facts while progressing from single digit to four digit subtraction. This book includes 57 pages of reproducible Drill and Word Problem worksheets that can be used as homework sheets or timed exercises. Answer keys and certificate of completion are also included. Supports Common Core Standards for Mathematics Gr. 1-3.","brand":"On the Mark Press","offers":[{"title":"Default Title","offer_id":42551732371569,"sku":"9781770721463","price":16.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/4195\/5185\/files\/otm1129_9.jpg?v=1761656639","url":"https:\/\/scholarschoice.ca\/products\/subtraction-drills-ebook","provider":"Scholar's Choice","version":"1.0","type":"link"}