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The content provides eighteen structured practice problems that challenge learners to identify the missing value in an equation, strengthening their foundational arithmetic skills, number sense, and algebraic thinking. By requiring students to determine either the first or second addend to reach a specific sum, this resource fosters a deeper understanding of addition properties. A comprehensive answer key is included at the end to support self-assessment and guided learning for both students and educators. This resource serves as an effective pedagogical tool for classroom reinforcement or supplementary home practice, aiming to improve computational accuracy and logical problem-solving abilities within the context of early elementary mathematics education.",{"@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-adding-whole-tens-to-3-digit-numbers-missing-addend-exercises/548368/",{"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-adding-whole-tens-to-3-digit-numbers-missing-addend-exercises/548368.png","ImageObject",300,407,{"name":92,"@type":93},"\tCallum ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02","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 goal of this math worksheet?","Question",{"text":112,"@type":113},"The primary goal is to help second-grade students practice addition by finding missing addends when adding whole tens to 3-digit numbers.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How many practice problems are included in this worksheet?",{"text":117,"@type":113},"There are 18 individual practice problems provided in the worksheet, along with a corresponding answer key.",{"name":119,"@type":110,"acceptedAnswer":120},"Are the answers provided for the exercises?",{"text":121,"@type":113},"Yes, a complete answer key is included at the bottom of the document, listing the correct solution for all 18 problems.","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},548368,1791781737,{"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},137451211410,"https://ap-avatar.wpscdn.com/avatar/2000bb0a9246f588df?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786362646172706240","Add a 3-digit number with whole tens – missing addend   \nGrade 2 Addition Worksheet  \nFind the missing numbers:  \n1)   + 60 = 395  \n4)   + 40 = 681  \n7) 227 +   = 257  \n10)   + 20 = 294  \n13)   + 20 = 341  \n16) 106 +   = 126  \n2) 246 +   = 266  \n5) 366 +   = 386  \n8)   + 30 = 770  \n11) 106 +   = 156  \n14) 102 +   = 142  \n17) 153 +   = 173  \n3)   + 40 = 757  \n6) 545 +   = 595  \n9)   + 40 = 356  \n12) 626 +   = 666  \n15) 241 +   = 251  \n18)   + 30 = 973  \nAnswers  \n1) 335 2) 20 3) 717  \n4) 641 5) 20 6) 50  \n7) 30 8) 740 9) 316  \n10) 274 11) 50 12) 40  \n13) 321 14) 40 15) 10  \n16) 20 17) 20 18) 943","cbCaitvxOu2zsVLn","https://ap.wps.com/l/cbCaitvxOu2zsVLn","pdf",27796,"English","# Addition Exercises\n## Answer Key","[{\"question\":\"What is the primary goal of this math worksheet?\",\"answer\":\"The primary goal is to help second-grade students practice addition by finding missing addends when adding whole tens to 3-digit numbers.\"},{\"question\":\"How many practice problems are included in this worksheet?\",\"answer\":\"There are 18 individual practice problems provided in the worksheet, along with a corresponding answer key.\"},{\"question\":\"Are the answers provided for the exercises?\",\"answer\":\"Yes, a complete answer key is included at the bottom of the document, listing the correct solution for all 18 problems.\"}]","Grade 2 Addition Worksheet - Adding Whole Tens to 3-Digit Numbers - Missing Addend Exercises | PDF"]