[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-545965-105":59,"doc-detail-545965-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-mental-math-missing-numbers","Grade 4 Addition - Mental Math Missing Numbers","","This educational worksheet is designed for fourth-grade students to practice mental addition skills by identifying missing numbers in equations where the sum is under 100. The document presents twenty distinct arithmetic problems, requiring learners to determine either the addend or the sum. It serves as an effective learning assessment tool for strengthening foundational numerical fluency, logical reasoning, and basic algebraic thinking in young students through structured, progressive practice exercises.",{"@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-mental-math-missing-numbers/545965/",{"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-mental-math-missing-numbers/545965.png","ImageObject",300,407,{"name":92,"@type":93},"Ezra","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-06","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"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 fourth-grade students improve their mental addition skills by solving for missing numbers in equations with sums under 100.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How many addition problems are included in this worksheet?",{"text":117,"@type":113},"There are twenty distinct addition problems provided for practice.",{"name":119,"@type":110,"acceptedAnswer":120},"Are these problems intended for specific age groups?",{"text":121,"@type":113},"Yes, these exercises are specifically designed as a Grade 4 Addition Worksheet.","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},545965,1791775846,{"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":81,"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},1099514068035,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Mental math: missing numbers (sum under  100)   \nGrade 4 Addition Worksheet  \nFind the missing number.  \n1. 51 +   = 56 2.   + 1 = 62  \n3.   + 19 = 89 4.   + 19 = 95  \n5. 23 + 59 =   6. 10 +   = 38  \n7. 34 +   = 69 8. 58 +   = 82  \n9. 21 +   = 72 10.   + 19 = 94  \n11. 39 + 55 =   12. 61 + 20 =    \n13.   + 68 = 77 14. 20 + 73 =    \n15. 41 + 53 =   16.   + 2 = 41  \n17. 86 +   = 103 18. 60 +   = 99  \n19. 64 +   = 80 20. 63 +   = 71  \nMental math: missing numbers (sum under  100)   \nGrade 4 Addition Worksheet  \nFind the missing number.  \n1. 51 +  5  = 56 2.  61  + 1 = 62  \n3.  70  + 19 = 89 4.  76  + 19 = 95  \n5. 23 + 59 =  82  6. 10 +  28  = 38  \n7. 34 +  35  = 69 8. 58 +  24  = 82  \n9. 21 +  51  = 72 10.  75  + 19 = 94  \n11. 39 + 55 =  94  12. 61 + 20 =  81   \n13.  9  + 68 = 77 14. 20 + 73 =  93   \n15. 41 + 53 =  94  16.  39  + 2 = 41  \n17. 86 +  17  = 103 18. 60 +  39  = 99  \n19. 64 +  16  = 80 20. 63 +  8  = 71","cbCaityavWceSghA","https://ap.wps.com/l/cbCaityavWceSghA","pdf",13314,"English","# Mental Math Practice\n## Addition Exercises","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The primary objective is to help fourth-grade students improve their mental addition skills by solving for missing numbers in equations with sums under 100.\"},{\"question\":\"How many addition problems are included in this worksheet?\",\"answer\":\"There are twenty distinct addition problems provided for practice.\"},{\"question\":\"Are these problems intended for specific age groups?\",\"answer\":\"Yes, these exercises are specifically designed as a Grade 4 Addition Worksheet.\"}]","Grade 4 Addition - Mental Math Missing Numbers | PDF"]