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By focusing on inverse operations and foundational number sense, this resource serves as an effective practice tool for young learners to build proficiency, accuracy, and confidence in mental math and algebraic thinking.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/grade-1-addition-worksheet-missing-addend-sums-up-to-20/546260/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/grade-1-addition-worksheet-missing-addend-sums-up-to-20/546260.png","ImageObject",300,407,{"name":42,"@type":43},"Theodore","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-05","2026-10-12",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What is the primary focus of this worksheet?","Question",{"text":63,"@type":64},"This worksheet focuses on helping first-grade students find missing addends in addition problems where the total sum is 20 or less.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How many math problems are included in this document?",{"text":68,"@type":64},"There are 20 individual addition problems provided for the student to solve.",{"name":70,"@type":61,"acceptedAnswer":71},"Does this worksheet include an answer key?",{"text":72,"@type":64},"Yes, the document includes a complete set of answers to verify the correct number that should be added to the first number to achieve the target sum.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},546260,1791776590,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},6,"Technology",50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":55,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":26,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":80,"read_time":55,"preview_page_count":4},7971461740886,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Addition-missing addend (sums up to 20)   \nGrade 1 Addition Worksheet  \nWhat number should be added to the first number to make the answer?  \n1) 4 +   = 14 2) 1 +   = 4  \n3) 2 +   = 4 4) 2 +   = 5  \n5) 3 +   = 4 6) 6 +   = 16  \n7) 3 +   = 10 8) 5 +   = 7  \n9) 4 +   = 18 10) 4 +   = 5  \n11) 5 +   = 10 12) 2 +   = 3  \n13) 4 +   = 6 14) 6 +   = 12  \n15) 2 +   = 12 16) 4 +   = 11  \n17) 6 +   = 13 18) 7 +   = 19  \n19) 6 +   = 10 20) 1 +   = 1  \nAddition-missing addend (sums up to 20)   \nGrade 1 Addition Worksheet  \nWhat number should be added to the first number to make the answer?  \n1) 4 + 10 = 14 2) 1 + 3 = 4  \n3) 2 + 2 = 4 4) 2 + 3 = 5  \n5) 3 + 1 = 4 6) 6 + 10 = 16  \n7) 3 + 7 = 10 8) 5 + 2 = 7  \n9) 4 + 14 = 18 10) 4 + 1 = 5  \n11) 5 + 5 = 10 12) 2 + 1 = 3  \n13) 4 + 2 = 6 14) 6 + 6 = 12  \n15) 2 + 10 = 12 16) 4 + 7 = 11  \n17) 6 + 7 = 13 18) 7 + 12 = 19  \n19) 6 + 4 = 10 20) 1 + 0 = 1","cbCailwVowwhWYEF","https://ap.wps.com/l/cbCailwVowwhWYEF","pdf",12483,"English","# Addition-missing addend (sums up to 20)\n## Problems\n## Answer Key","[{\"question\":\"What is the primary focus of this worksheet?\",\"answer\":\"This worksheet focuses on helping first-grade students find missing addends in addition problems where the total sum is 20 or less.\"},{\"question\":\"How many math problems are included in this document?\",\"answer\":\"There are 20 individual addition problems provided for the student to solve.\"},{\"question\":\"Does this worksheet include an answer key?\",\"answer\":\"Yes, the document includes a complete set of answers to verify the correct number that should be added to the first number to achieve the target sum.\"}]","Grade 1 Addition Worksheet - Missing Addend Sums up to 20 | PDF"]