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The included answer key provides correct results for all 20 problems, supporting self-check and targeted review of multiplication facts and scaling by powers of ten.",{"@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/understanding-multiplying-by-10s-and-100s-solve-each-problem-478088/478088/",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/understanding-multiplying-by-10s-and-100s-solve-each-problem-478088/478088.png","ImageObject",300,407,{"name":42,"@type":43},"Dipper","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-31","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",6,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"How do you multiply when one factor is scaled by 10 or 100?","Question",{"text":63,"@type":64},"Multiply using the base factors and apply the scaling through place value. For example, 900×8 is the same as 9×8 with an extra two zeros added from multiplying by 100.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What pattern connects 8×4 to 80×4 and 800×9 to 8×9?",{"text":68,"@type":64},"Scaling the first factor by 10 moves the product one place-value position to the left in terms of zeros added, and scaling by 100 adds two zeros. For 80×4, start from 8×4 and add one zero.",{"name":70,"@type":61,"acceptedAnswer":71},"Where can students verify their answers for all questions?",{"text":72,"@type":64},"The document includes an answer key listing the correct result for each problem from 1 through 20.","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},478088,1792854751,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & 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32 , then 80 × 4 = 3) If 4 × 1 = 4 , then 400 × 1 = 4) If 7 × 3 = 21 , then 70 × 3 = 5) If 8 × 9 = 72 , then 800 × 9 = 6) If 2 × 1 = 2 , then 200 × 1 = 7) If 3 × 8 = 24 , then 300 × 8 = 8) If 9 × 2 = 18 , then 900 × 2 = 9) If 9 × 6 = 54 , then 90 × 6 = 10) If 1 × 7 = 7 , then 100 × 7 = 11) If 2 × 3 = 6 , then 2 × 30 = 12) If 7 × 7 = 49 , then 7 × 70 = 13) If 1 × 1 = 1 , then 1 × 100 = 14) If 5 × 9 = 45 , then 5 × 900 = 15) If 4 × 2 = 8 , then 4 × 20 = 16) If 6 × 8 = 48 , then 6 × 800 = 17) If 6 × 3 = 18 , then 6 × 30 = 18) If 4 × 8 = 32 , then 4 × 80 = 19) If 1 × 9 = 9 , then 1 × 90 =  \n20) If 7 × 2 = 14 , then 7 × 20 =  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \n14.  \n15.  \n16.  \n17.  \n18.  \n19.  \n20.  \nAnswers  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n10  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nUnderstanding Multiplying By 10s and 100s  \nName: Answer Key  \n\n| Solve each problem.\u003Cbr>1) If 9 × 8 = 72 , then 900 × 8 =  7,200 \u003Cbr>2) If 8 × 4 = 32 , then 80 × 4 =  320 \u003Cbr>3) If 4 × 1 = 4 , then 400 × 1 =  400 \u003Cbr>4) If 7 × 3 = 21 , then 70 × 3 =  210 \u003Cbr>5) If 8 × 9 = 72 , then 800 × 9 =  7,200 \u003Cbr>6) If 2 × 1 = 2 , then 200 × 1 =  200 \u003Cbr>7) If 3 × 8 = 24 , then 300 × 8 =  2,400 \u003Cbr>8) If 9 × 2 = 18 , then 900 × 2 =  1,800 \u003Cbr>9) If 9 × 6 = 54 , then 90 × 6 =  540 \u003Cbr>10) If 1 × 7 = 7 , then 100 × 7 =  700 \u003Cbr>11) If 2 × 3 = 6 , then 2 × 30 =  60 \u003Cbr>12) If 7 × 7 = 49 , then 7 × 70 =  490 \u003Cbr>13) If 1 × 1 = 1 , then 1 × 100 =  100 \u003Cbr>14) If 5 × 9 = 45 , then 5 × 900 =  4,500 \u003Cbr>15) If 4 × 2 = 8 , then 4 × 20 =  80 \u003Cbr>16) If 6 × 8 = 48 , then 6 × 800 =  4,800 \u003Cbr>17) If 6 × 3 = 18 , then 6 × 30 =  180 \u003Cbr>18) If 4 × 8 = 32 , then 4 × 80 =  320 \u003Cbr>19) If 1 × 9 = 9 , then 1 × 90 =  90 \u003Cbr>20) If 7 × 2 = 14 , then 7 × 20 =  140  | Answers 1.  7,200  2.  320  3.  400 \u003Cbr>4.  210  5.  7,200  6.  200  7.  2,400  8.  1,800  9.  540  10.  700  11.  60  12.  490  13.  100  14.  4,500  15.  80  16.  4,800  17.  180  18.  320  19.  90  20. 140 |\n| --- | --- |\n\nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n10  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nUnderstanding Multiplying By 10s and 100s  \nName:  \nSolve each problem.  \n540 60 700 490  \n7,200 200 210 1,800 400 2,400 100 7,200 320  \n1) If 9 × 8 = 72 , then 900 × 8 =  \n2) If 8 × 4 = 32 , then 80 × 4 =  \n3) If 4 × 1 = 4 , then 400 × 1 =  \n4) If 7 × 3 = 21 , then 70 × 3 =  \n5) If 8 × 9 = 72 , then 800 × 9 =  \n6) If 2 × 1 = 2 , then 200 × 1 =  \n7) If 3 × 8 = 24 , then 300 × 8 =  \n8) If 9 × 2 = 18 , then 900 × 2 =  \n9) If 9 × 6 = 54 , then 90 × 6 =  \n10) If 1 × 7 = 7 , then 100 × 7 =  \n11) If 2 × 3 = 6 , then 2 × 30 =  \n12) If 7 × 7 = 49 , then 7 × 70 =  \n13) If 1 × 1 = 1 , then 1 × 100 =  \nAnswers  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n10  \n1-10  \n11-13  \n92  \n15  \n85 77 8 0  \n69 62 54 46 38 31 23","cbCaiqXLCpb5bMTN","https://ap.wps.com/l/cbCaiqXLCpb5bMTN","pdf",46573,"English","# Solve each problem\n## Itemized questions 1-20\n## Answer key","[{\"question\":\"How do you multiply when one factor is scaled by 10 or 100?\",\"answer\":\"Multiply using the base factors and apply the scaling through place value. For example, 900×8 is the same as 9×8 with an extra two zeros added from multiplying by 100.\"},{\"question\":\"What pattern connects 8×4 to 80×4 and 800×9 to 8×9?\",\"answer\":\"Scaling the first factor by 10 moves the product one place-value position to the left in terms of zeros added, and scaling by 100 adds two zeros. For 80×4, start from 8×4 and add one zero.\"},{\"question\":\"Where can students verify their answers for all questions?\",\"answer\":\"The document includes an answer key listing the correct result for each problem from 1 through 20.\"}]","Understanding Multiplying By 10s and 100s - Solve Each Problem | PDF",1790790910]