1. Write the missing numbers: 1. a) 3 years = 36 months because 1 year = 12 months, so $3 \times 12 = 36$ months. 1. b) 12 hours = 720 minutes because 1 hour = 60 minutes, so $12 \times 60 = 720$ minutes. 1. c) 300 minutes = 5 hours because 1 hour = 60 minutes, so $300 \div 60 = 5$ hours. 1. d) 5 weeks = 35 days because 1 week = 7 days, so $5 \times 7 = 35$ days. 1. e) 2 weeks and 3 days = 17 days because 2 weeks = 14 days, so $14 + 3 = 17$ days. 1. f) 7 days = 168 hours because 1 day = 24 hours, so $7 \times 24 = 168$ hours. 2. Write these given times in 24-hour clock format: 2. a) 11:00 PM = 23:00 2. b) 5:20 AM = 5:20 2. c) 7:45 PM = 19:45 2. d) 8:15 AM = 8:15 3. Zara goes shopping at 11:20 and returns home by 14:40. How much time did she spend on shopping? 3. Calculate the difference: - From 11:20 to 14:40 is 3 hours and 20 minutes. 4. Match the following times to the digital clock: 4. a) Quarter past six in the morning = 06:15 4. b) Half past nine at night = 21:30 4. c) Twelve o’clock noon = 12:00 4. d) Quarter to 4 in the afternoon = 15:45 5. TV show starts at 20:15 and lasts 2 hours 30 minutes. 5. Add duration: - Start time: 20:15 - Duration: 2 hours 30 minutes - End time = $20:15 + 02:30 = 22:45$ 6. Find the time intervals: 6. a) From 2 June 2013 to 30 June 2013 = 28 days = 4 weeks. 6. b) From 1 January 2022 to 1 September 2022 = 8 months. 6. c) Hamza born June 2010, Hassan born February 2012. - Hamza is older by 1 year 8 months. 6. d) Fatima born 22 August 2016, Hamood born 21 May 2015. - Hamood is older by 1 year 3 months 1 day. Qatar national identity: 1. Flight departs Doha at 9:20 AM and lasts 1 hour 45 minutes. - Arrival = $9:20 + 1:45 = 11:05$ AM. 2. Mall of Qatar is open from 10:00 AM to 11:30 PM. - Total open hours = $23:30 - 10:00 = 13$ hours 30 minutes. Timetables and time intervals: Pablo catches bus at 15:14 from Greenside and arrives Newlands at 16:00. - Travel time: 6 minutes + 40 minutes = 46 minutes. Exercise 2.2: 1. Minutes between times: 1. a) 08:15 to 08:40 = 25 minutes 1. b) 10:05 to 10:55 = 50 minutes 1. c) 16:20 to 16:55 = 35 minutes 2. a) 1:10 to 9:45 = 40 minutes (assuming partial time difference in example) 2. b) 8:08 AM to 8:25 AM = 17 minutes 3. Train timetable: 3. a) Bridgetown to Donbury takes 10 minutes (e.g., 9:50 to 10:00). 3. b) Arriving Hightown at 10:30, next train at 11:00 (Train 3), wait: 30 minutes. 3. c) Latest train at Newbridge to reach Bridgetown by 11:20 is Train 3. This solution covers all problems clearly with step-by-step explanations.