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It includes minutes and seconds problems, hours and minutes problems, and extended cases in days, weeks, months, and years. For each question, the worksheet specifies expressions to solve using addition and subtraction, ensuring unit consistency and correct conversion into the requested final form. 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Date  \nADD AND SUBTRACT TIME INTERVALS 1  \n1) Work out these time intervals in minutes and seconds:  \na) 4 minutes 30 seconds + 2 minutes 10 seconds =   min   sec  \nb) 8 minutes 10 seconds + 5 minutes 25 seconds =   min   sec  \nc) 3 minutes 40 seconds + 2 minutes 30 seconds =   min   sec  \nd) 9 minutes 20 seconds – 1 minute 10 seconds =   min   sec  \ne) 10 minutes 50 seconds – 4 minutes 30 seconds =   min   sec  \nf) 6 minutes – 3 minutes 20 seconds =   min   sec  \n2) Work out these time intervals in hours and minutes:  \na) 3 hours 20 minutes + 2 hours 15 minutes =   hrs   min  \nb) 2 hours 5 minutes + 4 hours 50 minutes =   hrs   min  \nc) 7 hours 40 minutes + 3 hours 20 minutes =   hrs   min  \nd) 6 hours 30 minutes – 2 hours 20 minutes =   hrs   min  \ne) 3 hours 45 minutes – 1 hour 10 minutes =   hrs   min  \nf) 7 hours – 4 hours 40 minutes =   hrs   min  \n3) Work out these time intervals in days, weeks, months and years.  \na) 4 years 5 months + 2 years 6 months =   years   months  \nb) 5 weeks 4 days + 2 weeks 5 days =   weeks   days  \nc) 3 years 8 months + 5 years 10 months =   years   months  \nd) 7 weeks 5 days + 4 weeks 3 days =   weeks   days  \ne) 8 weeks 3 days – 3 weeks 2 days =   weeks   days  \nf) 5 years 9 months – 2 years 6 months =   years   months  \ng) 9 weeks 1 day – 3 weeks 5 days =   weeks   days  \nh) 8 years 2 months – 4 years 5 months =   years   months  \nName Date  \nADD AND SUBTRACT TIME INTERVALS 1 ANSWERS  \n1) Work out these time intervals in minutes and seconds: a) 4 minutes 30 seconds + 2 minutes 10 seconds = 6 min 40 sec b) 8 minutes 10 seconds + 5 minutes 25 seconds = 13 min 35 sec c) 3 minutes 40 seconds + 2 minutes 30 seconds = 6 min 10 secd) 9 minutes 20 seconds – 1 minute 10 seconds = 8 min 10 sec e) 10 minutes 50 seconds – 4 minutes 30 seconds = 6 min 20 sec f) 6 minutes – 3 minutes 20 seconds = 2 min 40 sec  \n2) Work out these time intervals in hours and minutes:  \na) 3 hours 20 minutes + 2 hours 15 minutes = 5 hrs 35 min  \nb) 2 hours 5 minutes + 4 hours 50 minutes = 6 hrs 55 min  \nc) 7 hours 40 minutes + 3 hours 20 minutes = 11 hrs 0 min  \nd) 6 hours 30 minutes – 2 hours 20 minutes = 4 hrs 10 min  \ne) 3 hours 45 minutes – 1 hour 10 minutes = 2 hrs 35 min  \nf) 7 hours – 4 hours 40 minutes = 2 hrs 20 min  \n3) Work out these time intervals in days, weeks, months and years.  \na) 4 years 5 months + 2 years 6 months = 6 years 11 months  \nb) 5 weeks 4 days + 2 weeks 5 days = 8 weeks 2 days  \nc) 3 years 8 months + 5 years 10 months = 9 years 6 months  \nd) 7 weeks 5 days + 4 weeks 3 days = 12 weeks 1 days  \ne) 8 weeks 3 days – 3 weeks 2 days = 5 weeks 1 days  \nf) 5 years 9 months – 2 years 6 months = 3 years 3 months  \ng) 9 weeks 1 day – 3 weeks 5 days = 5 weeks 3 days  \nh) 8 years 2 months – 4 years 5 months = 3 years 9 months","cbCaim7p1M4gT27K","https://ap.wps.com/l/cbCaim7p1M4gT27K","pdf",123986,"English","# Questions\n## Minutes and seconds\n## Hours and minutes\n## Days, weeks, months and years\n# Answers","[{\"question\":\"What types of time calculations are included in ADD AND SUBTRACT TIME INTERVALS 1?\",\"answer\":\"It includes addition and subtraction of time intervals in minutes and seconds, hours and minutes, and days, weeks, months, and years.\"},{\"question\":\"How are the final answers formatted in each section?\",\"answer\":\"Minutes-and-seconds problems end in minutes and seconds, hours-and-minutes problems end in hours and minutes, and the longer section ends in the requested combinations of years/months or weeks/days.\"},{\"question\":\"Where can I find the results for each question set?\",\"answer\":\"The document contains a separate “ANSWERS” section that lists the calculated results for all questions in parts 1, 2, and 3.\"}]","ADD AND SUBTRACT TIME INTERVALS 1 - Practice and Answers | PDF",1792673867]