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Designed to help young learners improve their mental arithmetic skills, the document presents 20 practice problems that involve adding multiples of ten. Each problem requires students to calculate the sum, reinforcing foundational addition concepts and place value understanding. This resource serves as an effective learning tool for classroom instruction or home practice, providing clear examples and a systematic approach to mastering two-digit addition within the range of 10 to 160.",{"@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/adding-whole-tens-grade-1-math-worksheet/546267/",{"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/adding-whole-tens-grade-1-math-worksheet/546267.png","ImageObject",300,407,{"name":92,"@type":93},"Theodore","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-03","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the target grade level for this worksheet?","Question",{"text":112,"@type":113},"This worksheet is designed for first-grade students to practice addition.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What specific math skill is being practiced in this document?",{"text":117,"@type":113},"The document focuses on adding two-digit whole tens, such as 40 + 10 or 80 + 80.",{"name":119,"@type":110,"acceptedAnswer":120},"How many addition problems are included in this worksheet?",{"text":121,"@type":113},"There are 20 addition problems provided in the worksheet for students to solve.","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},546267,1791776609,{"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":19,"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},7971461740886,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Adding whole tens (2 digits)   \nGrade 1 Addition Worksheet  \nFind the sum.  \n1) 40 + 10 =   2) 10 + 30 =   3) 10 + 30 =   4) 40 + 50 =   5) 30 + 40 =   6) 50 + 40 =   7) 20 + 60 =   8) 60 + 20 =   9) 20 + 70 =   10) 40 + 70 =   11) 80 + 30 =   12) 30 + 40 =   13) 20 + 20 =   14) 10 + 40 =   15) 70 + 30 =   16) 10 + 30 =   17) 20 + 80 =   18) 50 + 50 =    \n19) 70 + 20 =   20) 80 + 80 =    \nAdding whole tens (2 digits)   \nGrade 1 Addition Worksheet  \nFind the sum.  \n1) 40 + 10 = 50  2) 10 + 30 = 40   \n3) 10 + 30 = 40  4) 40 + 50 = 90   \n5) 30 + 40 = 70  6) 50 + 40 = 90   \n7) 20 + 60 = 80  8) 60 + 20 = 80   \n9) 20 + 70 = 90  10) 40 + 70 = 110   \n11) 80 + 30 = 110  12) 30 + 40 = 70   \n13) 20 + 20 = 40  14) 10 + 40 = 50   \n15) 70 + 30 = 100  16) 10 + 30 = 40   \n17) 20 + 80 = 100  18) 50 + 50 = 100   \n19) 70 + 20 = 90  20) 80 + 80 = 160","cbCaidCzmarLvLgt","https://ap.wps.com/l/cbCaidCzmarLvLgt","pdf",12149,"English","# Practice Problems\n## Answer Key","[{\"question\":\"What is the target grade level for this worksheet?\",\"answer\":\"This worksheet is designed for first-grade students to practice addition.\"},{\"question\":\"What specific math skill is being practiced in this document?\",\"answer\":\"The document focuses on adding two-digit whole tens, such as 40 + 10 or 80 + 80.\"},{\"question\":\"How many addition problems are included in this worksheet?\",\"answer\":\"There are 20 addition problems provided in the worksheet for students to solve.\"}]","Adding Whole Tens - Grade 1 Math Worksheet | PDF"]