[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-545866-105":59,"doc-detail-545866-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","grade-4-addition-worksheet-mental-math-adding-two-2-digit-numbers","Grade 4 Addition Worksheet - Mental Math Adding Two 2-Digit Numbers","","This Grade 4 mathematics worksheet provides a series of practice exercises designed to improve students' mental math skills, specifically focusing on the addition of two 2-digit numbers. The document presents 20 unique addition problems, offering a blend of equations that result in sums both under and over 100. By encouraging students to perform these calculations mentally, the worksheet aims to enhance arithmetic fluency, numerical reasoning, and speed in basic operational tasks. The material includes both blank spaces for students to record their answers and a completed answer key version for verification and self-assessment, making it an excellent resource for classroom drills or supplemental home study to reinforce foundational math concepts.",{"@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-4-addition-worksheet-mental-math-adding-two-2-digit-numbers/545866/",{"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-4-addition-worksheet-mental-math-adding-two-2-digit-numbers/545866.png","ImageObject",300,407,{"name":92,"@type":93},"Oliver","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-05","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 age group for these math problems?","Question",{"text":112,"@type":113},"These problems are designed for Grade 4 students to practice their mental math addition skills.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What specific math operation does this worksheet cover?",{"text":117,"@type":113},"This worksheet focuses exclusively on the addition of two 2-digit numbers.",{"name":119,"@type":110,"acceptedAnswer":120},"Does the document provide the solutions to the addition problems?",{"text":121,"@type":113},"Yes, the document includes a version of the worksheet that provides the calculated sums for each of the 20 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},545866,1791775645,{"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},8796095461610,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Mental math: adding two 2-digit numbers  (sum under 100)   \nGrade 4 Addition Worksheet  \nFind the sum.  \n1. 28 + 10 =   2. 22 + 44 =   3. 51 + 19 =   4. 70 + 18 =   5. 60 + 12 =   6. 29 + 66 =   7. 21 + 66 =   8. 30 + 18 =   9. 11 + 4 =   10. 89 + 12 =   11. 18 + 72 =   12. 28 + 67 =   13. 31 + 55 =   14. 13 + 45 =   15. 32 + 31 =   16. 13 + 49 =   17. 68 + 34 =   18. 2 + 28 =    \n19. 43 + 10 =   20. 22 + 55 =    \nMental math: adding two 2-digit numbers  (sum under 100)   \nGrade 4 Addition Worksheet  \nFind the sum.  \n1. 28 + 10 =  38  2. 22 + 44 =  66   \n3. 51 + 19 =  70  4. 70 + 18 =  88   \n5. 60 + 12 =  72  6. 29 + 66 =  95   \n7. 21 + 66 =  87  8. 30 + 18 =  48   \n9. 11 + 4 =  15  10. 89 + 12 =  101   \n11. 18 + 72 =  90  12. 28 + 67 =  95   \n13. 31 + 55 =  86  14. 13 + 45 =  58   \n15. 32 + 31 =  63  16. 13 + 49 =  62   \n17. 68 + 34 =  102  18. 2 + 28 =  30   \n19. 43 + 10 =  53  20. 22 + 55 =  77","cbCaiuIe0BUNhoCA","https://ap.wps.com/l/cbCaiuIe0BUNhoCA","pdf",13174,"English","# Mental Math Addition Practice\n## Answer Key","[{\"question\":\"What is the target age group for these math problems?\",\"answer\":\"These problems are designed for Grade 4 students to practice their mental math addition skills.\"},{\"question\":\"What specific math operation does this worksheet cover?\",\"answer\":\"This worksheet focuses exclusively on the addition of two 2-digit numbers.\"},{\"question\":\"Does the document provide the solutions to the addition problems?\",\"answer\":\"Yes, the document includes a version of the worksheet that provides the calculated sums for each of the 20 problems.\"}]","Grade 4 Addition Worksheet - Mental Math Adding Two 2-Digit Numbers | PDF"]