[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-483057-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-483057-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-time-using-rounding-answer-key-483057","Determining Time Using Rounding - Answer Key","","Determining Time Using Rounding - Answer Key provides worked examples for solving elapsed time problems by rounding time values. It demonstrates rounding to the next hour first, then compensating for the minutes added during the rounding step by subtracting the difference. A set of 20 practice equations is included with computed answers, along with an example calculation that shows the rounding adjustment process. 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In the example above we can round 1 hour and 55 minutes up to 2 hours (5 minutes more) .\u003Cbr>6:25 + 2 hours = 8:25\u003Cbr>When rounded to 2 hours, we can easily see that 6:25 + 2 hours is 8:25 . But since we added 5 minutes, now we must take away 5 minutes.\u003Cbr>8:25-5 Minutes = 8:20 And now we know the elapsed time!\u003Cbr>Ex) 3:35 + 2 hours and 55 minutes =  6:30 \u003Cbr>1) 3:35 + 2 hours and 55 minutes =  1:35 \u003Cbr>2) 1:10 + 2 hours and 55 minutes =  4:05 \u003Cbr>3) 1:10 + 2 hours and 55 minutes =  2:25 \u003Cbr>4) 4:45 + 1 hour and 50 minutes =  6:35 \u003Cbr>5) 4:45 + 1 hour and 50 minutes =  7:20 \u003Cbr>6) 6:35 + 2 hours and 50 minutes =  9:25 \u003Cbr>7) 6:35 + 2 hours and 50 minutes =  4:30 \u003Cbr>8) 7:25 + 3 hours and 50 minutes =  11:15 \u003Cbr>9) 7:25 + 3 hours and 50 minutes =  6:30 \u003Cbr>10) 3:50 + 1 hour and 50 minutes =  5:40 \u003Cbr>11) 3:50 + 1 hour and 50 minutes =  3:00 \u003Cbr>12) 2:00 + 3 hours and 50 minutes =  5:50 \u003Cbr>13) 2:00 + 3 hours and 50 minutes =  4:50 \u003Cbr>14) 5:00 + 3 hours and 50 minutes =  8:50 \u003Cbr>15) 5:00 + 3 hours and 50 minutes =  7:30 \u003Cbr>16) 4:15 + 1 hour and 50 minutes =  6:05 \u003Cbr>17) 4:15 + 1 hour and 50 minutes =  7:50 \u003Cbr>18) 6:25 + 2 hours and 50 minutes =  9:15 \u003Cbr>19) 6:25 + 2 hours and 50 minutes =  6:00 \u003Cbr>20) 7:40 + 3 hours and 55 minutes =  11:35  | Answers\u003Cbr>Ex.  6:30 \u003Cbr>1.  1:35  2.  4:05  3.  2:25  4.  6:35  5.  7:20  6.  9:25  7.  4:30  8.  11:15  9.  6:30  10.  5:40  11.  3:00  12.  5:50  13.  4:50  14.  8:50  15.  7:30  16.  6:05  17.  7:50  18.  9:15  19.  6:00 \u003Cbr>20. 11:35 |\n| --- | --- |\n\nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n8  \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 Time Using Rounding  \nName:  \nDetermine the answer by using rounding strategies.  \n6:25 + 1 hour and 55 minutes  \nWhen adding or subtracting time, it is often easier to round to the next hour first. In the example above we can round 1 hour and 55 minutes up to 2 hours (5 minutes more) .  \n6:25 + 2 hours = 8:25  \nWhen rounded to 2 hours, we can easily see that 6:25 + 2 hours is 8:25 . But since we added 5 minutes, now we must tak","cbCaisU3CRCFmI55","https://ap.wps.com/l/cbCaisU3CRCFmI55","pdf",50943,"English","# Determine the answer by using rounding strategies\n## Example explanation and rounding adjustment\n## Practice problems 1-20\n## Answer key","[{\"question\":\"Why does the method round to the next hour first when adding or subtracting time?\",\"answer\":\"Because rounding to the next hour makes the time arithmetic easier. After rounding, the solution corrects for the extra minutes that were introduced by the rounding.\"},{\"question\":\"How is the rounding correction applied in the worked example?\",\"answer\":\"The example rounds 1 hour and 55 minutes up to 2 hours, then subtracts 5 minutes because 5 minutes were added by the rounding step.\"},{\"question\":\"What do the answer key entries provide for the practice problems?\",\"answer\":\"The answer key lists the final elapsed time results for each numbered equation from 1 through 20.\"}]","Determining Time Using Rounding - Answer Key | PDF",1790799869]