[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-483050-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-483050-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-483050","Determining Time Using Rounding - Answer Key","","Works through elapsed-time calculations by rounding to the nearest hour to simplify adding or subtracting. Starts with 6:25 + 1 hour and 55 minutes, rounds 1 hour 55 minutes up to 2 hours, then compensates by subtracting the extra 5 minutes from 8:25 to get the elapsed time of 8:20. 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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) 4:10 + 2 hours and 50 minutes =  7:00 \u003Cbr>1) 4:10 + 2 hours and 50 minutes =  3:20 \u003Cbr>2) 6:20 + 2 hours and 55 minutes =  9:15 \u003Cbr>3) 6:20 + 2 hours and 55 minutes =  2:40 \u003Cbr>4) 1:00 + 1 hour and 55 minutes =  2:55 \u003Cbr>5) 1:00 + 1 hour and 55 minutes =  3:05 \u003Cbr>6) 4:30 + 2 hours and 55 minutes =  7:25 \u003Cbr>7) 4:30 + 2 hours and 55 minutes =  7:50 \u003Cbr>8) 3:40 + 1 hour and 55 minutes =  5:35 \u003Cbr>9) 3:40 + 1 hour and 55 minutes =  7:50 \u003Cbr>10) 3:00 + 2 hours and 55 minutes =  5:55 \u003Cbr>11) 3:00 + 2 hours and 55 minutes =  3:25 \u003Cbr>12) 4:25 + 3 hours and 50 minutes =  8:15 \u003Cbr>13) 4:25 + 3 hours and 50 minutes =  6:15 \u003Cbr>14) 5:40 + 3 hours and 55 minutes =  9:35 \u003Cbr>15) 5:40 + 3 hours and 55 minutes =  5:50 \u003Cbr>16) 3:35 + 2 hours and 50 minutes =  6:25 \u003Cbr>17) 3:35 + 2 hours and 50 minutes =  2:20 \u003Cbr>18) 4:10 + 1 hour and 55 minutes =  6:05 \u003Cbr>19) 4:10 + 1 hour and 55 minutes =  4:00 \u003Cbr>20) 6:00 + 2 hours and 55 minutes =  8:55  | Answers\u003Cbr>Ex.  7:00 \u003Cbr>1.  3:20  2.  9:15  3.  2:40  4.  2:55  5.  3:05  6.  7:25  7.  7:50  8.  5:35  9.  7:50  10.  5:55  11.  3:25  12.  8:15  13.  6:15  14.  9:35  15.  5:50  16.  6:25  17.  2:20  18.  6:05  19.  4:00 \u003Cbr>20. 8:55 |\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  \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 take aw","cbCaikbOxVswBmsE","https://ap.wps.com/l/cbCaikbOxVswBmsE","pdf",516715,"English","# Determine the answer by using rounding strategies\n## Worked example\n## Practice problems (1-20)\n## Answer key","[{\"question\":\"Why does the worksheet round time to the next hour first?\",\"answer\":\"Rounding makes the addition or subtraction of time easier by using whole hours. The method then adjusts for the difference introduced by rounding.\"},{\"question\":\"How is the result adjusted after rounding up?\",\"answer\":\"After rounding 1 hour 55 minutes up to 2 hours (adding 5 extra minutes), the worksheet subtracts 5 minutes from the rounded total to get the correct elapsed time.\"},{\"question\":\"What is the elapsed time for 6:25 + 1 hour and 55 minutes in the example?\",\"answer\":\"Rounding gives 6:25 + 2 hours = 8:25, then subtracting the extra 5 minutes gives 8:20.\"}]","Determining Time Using Rounding - Answer Key | PDF",1790799858,76]