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CHALLENGE - Digit Number Puzzle","","Digit challenge worksheet asking learners to use each of the digits 1, 2, 3 and 4 exactly once in every calculation to form integers from 1 to 20, with brackets required to control order of operations. Worked examples demonstrate multiple expression structures using addition, subtraction, multiplication, and parentheses. An extension asks learners to continue from 21 to 30 and notes that at least one target number is impossible without combining digits.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/1-2-3-4-challenge-digit-number-puzzle/631434/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/1-2-3-4-challenge-digit-number-puzzle/631434.png","ImageObject",300,407,{"name":92,"@type":93},"Olivia Brown","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-04","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the main rule for the 1..2..3..4 challenge?","Question",{"text":112,"@type":113},"Use the digits 1, 2, 3 and 4 exactly once in each calculation to make the required number, and remember to use brackets.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is the example for making numbers shown?",{"text":117,"@type":113},"The sheet provides sample number sentences, such as (4 + 3 – 1) x 2 = 12, and later includes multiple solutions for many targets.",{"name":119,"@type":110,"acceptedAnswer":120},"Which extension task is included after completing 1 to 20?",{"text":121,"@type":113},"Make numbers from 21 to 30 using the same digit rule, with the note that one of these numbers cannot be made without combining digits.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},631434,1792859425,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":81,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":39},16904993612988,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","1.. 2.. 3 .. 4.. CHALLENGE  \nUse each of the digits 1, 2, 3 and 4 once in each calculation to make numbers from 1 to 20 . Remember to use brackets!  \nYou can use the digits in any order.  \nExample: (4 + 3 – 1) x 2 = 12  \n= 1  \n\n| = 2 |\n| --- |\n| = 3 |\n| = 4 |\n| = 5 |\n| = 6 |\n| = 7 |\n| = 8 |\n| = 9 |\n| = 10 |\n\n= 11  \n\n| (4 + 3 – 1) x 2 = 12 |\n| --- |\n| = 13 |\n| = 14 |\n| = 15 |\n| = 16 |\n| = 17 |\n| = 18 |\n| = 19 |\n| = 20 |\n\nExtension:  \nCan you also use the digits to make the numbers from 21 to 30?  \nOne of these numbers is impossible to make without combining digits!  \n1.. 2.. 3.. 4.. CHALLENGE  \nUse each of the digits 1, 2, 3 and 4 once in each calculation to make numbers from 1 to 20. Remember to use brackets!  \nExample: 3 x 4 – 2 – 1 = 9  \nExtension:  \nCan you also use the digits to make the numbers from 21 to 30?  \nOne of these numbers is impossible to make without combining digits!  \n1.. 2.. 3.. 4.. CHALLENGE ANSWERS  \nUse each of the digits 1, 2, 3 and 4 once in each calculation to make numbers from 1 to 20. Remember to use brackets!  \nThere are several ways that you can make most of the numbers below. We have included an example for each number.  \n3 + 2 – 4 x 1  \n= 1  \n3 + 2 + 1-4  \n= 2  \n\n| 4 + 2 – 3 x 1 | = 3 |\n| --- | --- |\n| 4 + 3 – 2 – 1 | = 4 |\n| 4 + 3 – 2 x 1 | = 5 |\n| 4 + 3 + 1-2 | = 6 |\n| (4 – 2) x 3 + 1 | = 7 |\n| 4 + 3 + 2 – 1 | = 8 |\n| 3 x 4 – 2 – 1 | = 9 |\n| 4 x 2 + 3 – 1 | = 10 |\n| Extension:\u003Cbr>(3 + 2) x 4 + 1 | = 21 |\n| (4 x 3 – 1) x 2 | = 22 |\n| 4 x 3 x 2-1 | = 23 |\n| 4 x 3 x 2 x 1 | = 24 |\n\n(4 + 1) x (3 + 2) = 25  \n4 x 2 + 3 x 1  \n= 11  \n\n| (4 + 3 – 1) x 2 | = 12 |\n| --- | --- |\n| (4 + 3) x 2-1 | = 13 |\n| 4 x 3 + 2 x 1 | = 14 |\n| (4 + 2 – 1) x 3 | = 15 |\n| (4 + 3 + 1) x 2 | = 16 |\n| (4 + 2) x 3 – 1 | = 17 |\n| (4 x 1 + 2) x 3 | = 18 |\n| (4 + 2) x 3 + 1 | = 19 |\n| (3 x 1 + 2) x 4 | = 20 |\n\n(4 x 3 + 1) x 2  \n= 26  \n\n| (4 x 2 + 1) x 3 | = 27 |\n| --- | --- |\n| (3 x 2 + 1) x 4 | = 28 |\n| impossible | = 29 |\n\n(4 + 1) x 3 x 2  \n= 30  \nIf you are allowed to combine digits, then you can make 29 using 32 – 4 + 1","cbCainqvtaUEBSkU","https://ap.wps.com/l/cbCainqvtaUEBSkU","pdf",196115,"English","# Challenge\n## Extension\n# Challenge Answers","[{\"question\":\"What is the main rule for the 1..2..3..4 challenge?\",\"answer\":\"Use the digits 1, 2, 3 and 4 exactly once in each calculation to make the required number, and remember to use brackets.\"},{\"question\":\"How is the example for making numbers shown?\",\"answer\":\"The sheet provides sample number sentences, such as (4 + 3 – 1) x 2 = 12, and later includes multiple solutions for many targets.\"},{\"question\":\"Which extension task is included after completing 1 to 20?\",\"answer\":\"Make numbers from 21 to 30 using the same digit rule, with the note that one of these numbers cannot be made without combining digits.\"}]","1.. 2.. 3.. 4.. CHALLENGE - Digit Number Puzzle | PDF",1792669084]