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The document features eighteen distinct practice problems where students are tasked with identifying a missing addend to complete the equation, with the sum provided for each. This resource is excellent for reinforcing arithmetic fluency, improving mental math speed, and developing foundational algebraic thinking by solving for an unknown variable in a simple sum. An answer key is conveniently included at the bottom of the page for immediate assessment and self-checking, making it an ideal tool for teachers to use in classroom settings or for parents to provide supplemental learning practice at home. The structured, clear layout ensures that students can focus effectively on building their confidence with multi-addend addition operations in a consistent and repetitive manner.",{"@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/grade-2-addition-worksheet-add-3-single-digit-numbers-missing-numbers/545031/",{"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/grade-2-addition-worksheet-add-3-single-digit-numbers-missing-numbers/545031.png","ImageObject",300,407,{"name":92,"@type":93},"Eliana","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-05","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the primary objective of this worksheet?","Question",{"text":112,"@type":113},"The primary objective is to help second-grade students practice adding three single-digit numbers while identifying missing addends to reach a specified sum.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How many problems are included in this addition worksheet?",{"text":117,"@type":113},"The worksheet includes a total of 18 math problems designed for student practice.",{"name":119,"@type":110,"acceptedAnswer":120},"Is there an answer key provided for the problems?",{"text":121,"@type":113},"Yes, a complete answer key for all 18 problems is provided at the bottom of the document to facilitate easy grading and self-assessment.","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},545031,1791773652,{"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":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"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":129,"read_time":24,"preview_page_count":4},4398048949847,"https://ap-avatar.wpscdn.com/avatar/400002536579ef2da7f?_k=1778318612642679267","Add 3 single-digit numbers – missing number   \nGrade 2 Addition Worksheet  \nFind the missing numbers:  \n1) 5 +   + 6 = 20  \n4)   + 4 + 3 = 13  \n7) 9 + 8 +   = 24  \n10) 5 + 7 +   = 18  \n13) 7 + 4 +   = 16  \n16) 6 + 5 +   = 14  \n2)   + 3 + 2 = 10  \n5) 2 + 5 +   = 16  \n8)   + 2 + 3 = 14  \n11)   + 9 + 7 = 24  \n14) 3 + 4 +   = 10  \n17) 5 + 7 +   = 14  \n3) 3 + 2 +   = 12  \n6) 4 +   + 4 = 17  \n9)   + 8 + 3 = 18  \n12) 3 +   + 7 = 17  \n15)   + 5 + 3 = 10  \n18) 8 + 7 +   = 21  \nAnswers  \n1) 9 2) 5 3) 7  \n4) 6 5) 9 6) 9  \n7) 7 8) 9 9) 7  \n10) 6 11) 8 12) 7  \n13) 5 14) 3 15) 2  \n16) 3 17) 2 18) 6","cbCaiu58yPC6IsCD","https://ap.wps.com/l/cbCaiu58yPC6IsCD","pdf",27494,"English","# Addition Practice Problems\n## Answer Key","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The primary objective is to help second-grade students practice adding three single-digit numbers while identifying missing addends to reach a specified sum.\"},{\"question\":\"How many problems are included in this addition worksheet?\",\"answer\":\"The worksheet includes a total of 18 math problems designed for student practice.\"},{\"question\":\"Is there an answer key provided for the problems?\",\"answer\":\"Yes, a complete answer key for all 18 problems is provided at the bottom of the document to facilitate easy grading and self-assessment.\"}]","Grade 2 Addition Worksheet - Add 3 Single-Digit Numbers - Missing Numbers | PDF"]