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Problems are numbered 1 through 20, each requiring the missing start time that results in the shown end time. The answer key provides the computed starting times for all listed items, supporting classroom practice and quick checking of students’ calculations. 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The worksheet asks for the start time that produces the result.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What does the example show?",{"text":117,"@type":113},"The example demonstrates the calculation pattern using a sample start time, a duration, and the resulting time.",{"name":119,"@type":110,"acceptedAnswer":120},"Where can the correct answers be found?",{"text":121,"@type":113},"The document includes an Answer Key section listing the computed starting times for problems 1 through 20.","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},483066,1790830103,{"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":41,"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":143,"read_time":144,"preview_page_count":4},962090760608,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Finding Start Time  \nName:  \nDetermine the starting time for each problem. Ex) 4:10 + 2 hours and 20 minutes = 6:30 1) + 3 hours and 50 minutes = 7:10  \n2) + 2 hours and 35 minutes = 8:55  \n3) + 1 hour and 20 minutes = 4:00  \n4) + 1 hour and 10 minutes = 2:10  \n5) + 1 hour and 50 minutes = 4:55  \n6) + 2 hours and 30 minutes = 7:00  \n7) + 2 hours and 40 minutes = 10:30  \n8) + 1 hour and 50 minutes = 5:30  \n9) + 1 hour and 30 minutes = 9:20  \n10) + 2 hours and 40 minutes = 5:40  \n11) + 3 hours and 10 minutes = 6:35  \n12) + 3 hours and 5 minutes = 7:30  \n13) + 1 hour and 10 minutes = 7:25  \n14) + 3 hours and 30 minutes = 9:10  \n15) + 2 hours and 40 minutes = 8:30  \n16) + 2 hours and 15 minutes = 5:50  \n17) + 2 hours and 20 minutes = 4:40  \n18) + 1 hour = 5:10  \n19) + 3 hours and 35 minutes = 7:35  \n20) + 2 hours = 8:00  \nAnswers  \nEx. 4:10  \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)  \n1  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nFinding Start Time  \nName: Answer Key  \n\n| Determine the starting time for each problem. Ex)  4:10  + 2 hours and 20 minutes = 6:30 1)  3:20  + 3 hours and 50 minutes = 7:10\u003Cbr>2)  6:20  + 2 hours and 35 minutes = 8:55\u003Cbr>3)  2:40  + 1 hour and 20 minutes = 4:00\u003Cbr>4)  1:00  + 1 hour and 10 minutes = 2:10\u003Cbr>5)  3:05  + 1 hour and 50 minutes = 4:55\u003Cbr>6)  4:30  + 2 hours and 30 minutes = 7:00\u003Cbr>7)  7:50  + 2 hours and 40 minutes = 10:30\u003Cbr>8)  3:40  + 1 hour and 50 minutes = 5:30\u003Cbr>9)  7:50  + 1 hour and 30 minutes = 9:20\u003Cbr>10)  3:00  + 2 hours and 40 minutes = 5:40\u003Cbr>11)  3:25  + 3 hours and 10 minutes = 6:35\u003Cbr>12)  4:25  + 3 hours and 5 minutes = 7:30\u003Cbr>13)  6:15  + 1 hour and 10 minutes = 7:25\u003Cbr>14)  5:40  + 3 hours and 30 minutes = 9:10\u003Cbr>15)  5:50  + 2 hours and 40 minutes = 8:30\u003Cbr>16)  3:35  + 2 hours and 15 minutes = 5:50\u003Cbr>17)  2:20  + 2 hours and 20 minutes = 4:40\u003Cbr>18)  4:10  + 1 hour = 5:10\u003Cbr>19)  4:00  + 3 hours and 35 minutes = 7:35\u003Cbr>20)  6:00  + 2 hours = 8:00 | Answers\u003Cbr>Ex.  4:10 \u003Cbr>1.  3:20  2.  6:20  3.  2:40  4.  1:00  5.  3:05  6.  4:30  7.  7:50  8.  3:40  9.  7:50  10.  3:00  11.  3:25  12.  4:25  13.  6:15  14.  5:40  15.  5:50  16.  3:35  17.  2:20  18.  4:10  19.  4:00 \u003Cbr>20. 6:00 |\n| --- | --- |\n\nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n1  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nFinding Start Time  \nName:  \nDetermine the starting time for each problem.  \n7:50 5:40 6:20 3:40 3:25 3:05 7:50 2:40 1:00 3:20 4:30 3:00  \n6:15 4:25  \nEx) 4:10 + 2 hours and 20 minutes = 6:30  \n1) + 3 hours and 50 minutes = 7:10  \n2) + 2 hours and 35 minutes = 8:55  \n3) + 1 hour and 20 minutes = 4:00  \n4) + 1 hour and 10 minutes = 2:10  \n5) + 1 hour and 50 minutes = 4:55  \n6) + 2 hours and 30 minutes = 7:00  \n7) + 2 hours and 40 minutes = 10:30  \n8) + 1 hour and 50 minutes = 5:30  \n9) + 1 hour and 30 minutes = 9:20  \n10) + 2 hours and 40 minutes = 5:40  \nAnswers  \nEx. 4:10  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \n14.  \n11)  \n12)  \n13)  \n14)  \nMath  \n+ 3 hours and 10 minutes = 6:35  \n+ 3 hours and 5 minutes = 7:30  \n+ 1 hour and 10 minutes = 7:25  \n+ 3 hours and 30 minutes = 9:10  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n1  \n1-10  \n11-14  \n93  \n21  \n86 79 14 7  \n71  \n0  \n64 57 50 43 36 29  \nFinding Start Time  \nName:  \n\n| Determine the starting time for each problem. Ex)  4:45  + 3 hours and 5 minutes = 7:50 1)   + 1 hour and 5 minutes = 3:50\u003Cbr>2)   + 1 hour and 5 minutes = 4:30\u003Cbr>3)   + 1 hour and 5 minutes = 3:20\u003Cbr>4)   + 3 hours and 30 minutes = 10:35\u003Cbr>5)   + 2 hours and 10 minutes = 9:40\u003Cbr>6)   + 2 hours and 50 minutes = 4:40\u003Cbr>7)   + 2 hours and 30 minutes = 4:05\u003Cbr>8)   + 3 hours and 20 minutes = 5:05\u003Cbr>9)   + 1 hour and 30 minutes = ","cbCaimzIyvS2stHi","https://ap.wps.com/l/cbCaimzIyvS2stHi","pdf",473318,"English","# Determine the starting time for each problem\n## Example and instructions\n## Problems 1-20\n## Answer key","[{\"question\":\"How do you find the starting time in these problems?\",\"answer\":\"Add (or subtract accordingly) the given hours and minutes to match the target time shown. The worksheet asks for the start time that produces the result.\"},{\"question\":\"What does the example show?\",\"answer\":\"The example demonstrates the calculation pattern using a sample start time, a duration, and the resulting time.\"},{\"question\":\"Where can the correct answers be found?\",\"answer\":\"The document includes an Answer Key section listing the computed starting times for problems 1 through 20.\"}]","Finding Start Time - Answer Key - 1-20 | PDF",1790799882,76]