[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-477854-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-477854-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","determining-reasonable-answer-answer-key-477854","Determining Reasonable Answer - Answer Key","","Worksheet answer key for the math topic “Determining Reasonable Answer.” It instructs learners to decide whether a shown multiplication answer is reasonable, labeling each item as “yes” or “no.” The key states number-ending rules: products of 2 must be even, products of 5 must end in 5 or 0, and products of 10 must end in 0. It provides correctness decisions for multiple problems and supports quick self-checking against the expected product properties.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/determining-reasonable-answer-answer-key-477854/477854/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/determining-reasonable-answer-answer-key-477854/477854.png","ImageObject",300,407,{"name":42,"@type":43},"supergirl","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What does “Determining Reasonable Answer” mean in this worksheet?","Question",{"text":63,"@type":64},"It means checking whether a displayed multiplication result is reasonable by applying number-ending rules and then marking it yes or no.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What rule applies when multiplying by 2?",{"text":68,"@type":64},"Any product of 2 has to end in an even number, so the ones digit must be even.",{"name":70,"@type":61,"acceptedAnswer":71},"How do you check products that involve 5 or 10?",{"text":72,"@type":64},"Multiplying by 5 must end in 5 or 0, while multiplying by 10 must end in 0.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},477854,1792878236,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,99,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},6,"Technology",50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":55,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":30,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":110},962088121634,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Determining  \nReasonable Answer  \nName:  \nDetermine if the answer shown is reasonable (yes) or not (no).  \nA2,n4,yt6,h8n0g) times 2 HAS to end in an even number Ex. 2 × 6 = 12 2 × 13 = 26 • Anything times 5 HAS to end in an either a 5 or a 0. Ex. 5 × 4 = 20 5 × 15 = 75  \n• Anything times 10 HAS to end in a 0. Ex. 10 × 7 = 70 10 × 16 = 160  \n1) 2 × 617 = 1,235 2) 10 × 902 = 9,020  \n3) 936 × 5 = 4,680 4) 10 × 506 = 5,067  \n5) 2 × 375 = 750 6) 2 × 944 = 1,889  \n7) 5 × 773 = 3,868 8) 444 × 10 = 4,449  \n9) 5 × 950 = 4,752 10) 608 × 5 = 3,040  \n11) 2 × 289 = 578 12) 2 × 530 = 1,060  \n13) 10 × 661 = 6,618 14) 5 × 999 = 4,996  \n15) 10 × 271 = 2,717 16) 2 × 334 = 669  \n17) 440 × 10 = 4,400 18) 808 × 2 = 1,617  \n19) 891 × 10 = 8,910 20) 951 × 10 = 9,510  \nAnswers  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \n14.  \n15.  \n16.  \n17.  \n18.  \n19.  \n20.  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n3  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nDetermining  \nReasonable Answer  \nName: Answer Key  \nDetermine if the answer shown is reasonable (yes) or not (no).  \nA2,n4,yt6,h8n0g) times 2 HAS to end in an even number Ex. 2 × 6 = 12 2 × 13 = 26 • Anything times 5 HAS to end in an either a 5 or a 0. Ex. 5 × 4 = 20 5 × 15 = 75  \n• Anything times 10 HAS to end in a 0. Ex. 10 × 7 = 70 10 × 16 = 160  \n1) 2 × 617 = 1,235 2) 10 × 902 = 9,020  \n3) 936 × 5 = 4,680 4) 10 × 506 = 5,067  \n5) 2 × 375 = 750 6) 2 × 944 = 1,889  \n7) 5 × 773 = 3,868 8) 444 × 10 = 4,449  \n9) 5 × 950 = 4,752 10) 608 × 5 = 3,040  \n11) 2 × 289 = 578 12) 2 × 530 = 1,060  \n13) 10 × 661 = 6,618 14) 5 × 999 = 4,996  \n15) 10 × 271 = 2,717 16) 2 × 334 = 669  \n17) 440 × 10 = 4,400 18) 808 × 2 = 1,617  \n19) 891 × 10 = 8,910 20) 951 × 10 = 9,510  \nAnswers  \n[1.](1. no)[ no](1. no)  \n2. yes  \n3. yes  \n[4.](4. no)[ no](4. no)  \n5. yes  \n[6.](6. no)[ no](6. no)  \n[7.](7. no)[ no](7. no)  \n[8.](8. no)[ no](8. no)  \n[9.](9. no)[ no](9. no)  \n10. yes  \n11. yes  \n12. yes  \n[13.](13. no)[ no](13. no)  \n[14.](14. no)[ no](14. no)  \n[15.](15. no)[ no](15. no)  \n[16.](16. no)[ no](16. no)  \n17. yes  \n[18.](18. no)[ no](18. no)  \n19. yes  \n20. yes  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n3  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nDetermining  \nReasonable Answer  \nName:  \nDetermine if the answer shown is reasonable (yes) or not (no).  \nA2,n4,yt6,h8n0g) times 2 HAS to end in an even number Ex. 2 × 6 = 12 2 × 13 = 26 • Anything times 5 HAS to end in an either a 5 or a 0. Ex. 5 × 4 = 20 5 × 15 = 75  \n• Anything times 10 HAS to end in a 0. Ex. 10 × 7 = 70 10 × 16 = 160  \nyes yes no no  \nyes yes no yes  \nyes no no no  \n1) 2 × 617 = 1,235 2) 10 × 902 = 9,020  \n3) 936 × 5 = 4,680 4) 10 × 506 = 5,067  \n5) 2 × 375 = 750 6) 2 × 944 = 1,889  \nAnswers  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n7) 5 × 773 = 3,868 8) 444 × 10 = 4,449  \n9) 5 × 950 = 4,752 10) 608 × 5 = 3,040  \n11) 2 × 289 = 578 12) 2 × 530 = 1,060  \nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n3  \n1-10 92  \n11-12 8  \n83  \n0  \n75 67 58 50 42 33 25 17","cbCaid7KepCJt3UF","https://ap.wps.com/l/cbCaid7KepCJt3UF","pdf",48320,"English","# Determining Reasonable Answer\n## Rules for product endings (2, 5, 10)\n## Answer key (yes/no)","[{\"question\":\"What does “Determining Reasonable Answer” mean in this worksheet?\",\"answer\":\"It means checking whether a displayed multiplication result is reasonable by applying number-ending rules and then marking it yes or no.\"},{\"question\":\"What rule applies when multiplying by 2?\",\"answer\":\"Any product of 2 has to end in an even number, so the ones digit must be even.\"},{\"question\":\"How do you check products that involve 5 or 10?\",\"answer\":\"Multiplying by 5 must end in 5 or 0, while multiplying by 10 must end in 0.\"}]","Determining Reasonable Answer - Answer Key | PDF",1790790511]