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Page 1 24 M E N T A L M A T H S Tick Tick Tick (Refer to the chapter # 3 and 4 of the NCERT Maths Book of Class IV) Summary 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year = 12 months 1 month = 4 weeks 1 week = 7 days 1 year = 365 days 1 leap year = 366 days 1 fortnight = 15 days 1 year = 52 weeks • A clock has three hands - Hour hand, Minute hand and Second hand. Hour Hand Minute Hand Second Hand • 12-hour clock A day is divided into two periods of 12 hours each. a.m. (Ante Meridiem) p.m. (Post Meridiem) • 12 midnight to 12 noon • Before 12 noon • 12 noon to 12 midnight • After 12 noon 11 12 1 2 3 4 8 10 9 5 6 7 Page 2 24 M E N T A L M A T H S Tick Tick Tick (Refer to the chapter # 3 and 4 of the NCERT Maths Book of Class IV) Summary 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year = 12 months 1 month = 4 weeks 1 week = 7 days 1 year = 365 days 1 leap year = 366 days 1 fortnight = 15 days 1 year = 52 weeks • A clock has three hands - Hour hand, Minute hand and Second hand. Hour Hand Minute Hand Second Hand • 12-hour clock A day is divided into two periods of 12 hours each. a.m. (Ante Meridiem) p.m. (Post Meridiem) • 12 midnight to 12 noon • Before 12 noon • 12 noon to 12 midnight • After 12 noon 11 12 1 2 3 4 8 10 9 5 6 7 M E N T A L M A T H S 25 • 24-hour clock A day is divided into 24 hours from 0 to 24. 0000 hours (midnight) or 12:00 a.m. 0800 hours or 8:00 a.m. 1200 hours (mid-day or noon) or 12:00 p.m. 1800 hours or 6:00 p.m. 2400 hours or 0000 hours (midnight) or 12:00 a.m. Questions 1. Convert 8 weeks 6 days into days. 2. How many minutes are there in 6 hours? 3. Read the clock and write the time. 4. Sunita spent three hours in shopping. She retuned home at 5 o’ clock. At what time did she start shopping? 5. How many months in a year have exactly thirty days? 6. In 24 hours clock time, 12 midnight is written as 0000 hours or . 7. What was the time 40 minutes before 8:30 a.m.? 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 Page 3 24 M E N T A L M A T H S Tick Tick Tick (Refer to the chapter # 3 and 4 of the NCERT Maths Book of Class IV) Summary 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year = 12 months 1 month = 4 weeks 1 week = 7 days 1 year = 365 days 1 leap year = 366 days 1 fortnight = 15 days 1 year = 52 weeks • A clock has three hands - Hour hand, Minute hand and Second hand. Hour Hand Minute Hand Second Hand • 12-hour clock A day is divided into two periods of 12 hours each. a.m. (Ante Meridiem) p.m. (Post Meridiem) • 12 midnight to 12 noon • Before 12 noon • 12 noon to 12 midnight • After 12 noon 11 12 1 2 3 4 8 10 9 5 6 7 M E N T A L M A T H S 25 • 24-hour clock A day is divided into 24 hours from 0 to 24. 0000 hours (midnight) or 12:00 a.m. 0800 hours or 8:00 a.m. 1200 hours (mid-day or noon) or 12:00 p.m. 1800 hours or 6:00 p.m. 2400 hours or 0000 hours (midnight) or 12:00 a.m. Questions 1. Convert 8 weeks 6 days into days. 2. How many minutes are there in 6 hours? 3. Read the clock and write the time. 4. Sunita spent three hours in shopping. She retuned home at 5 o’ clock. At what time did she start shopping? 5. How many months in a year have exactly thirty days? 6. In 24 hours clock time, 12 midnight is written as 0000 hours or . 7. What was the time 40 minutes before 8:30 a.m.? 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 26 M E N T A L M A T H S 8. Tell the time in a.m. or p.m. • 1730 hours = • 0640 hours = • 2150 hours = • 2340 hours = • 1335 hours = • 1225 hours = 9. Amita leaves for school at 6:45 a.m. and reaches school at 7:20 a.m. How long does she take to reach school? 10. Which of the following is a leap year? (a) 2001 (b) 2008 (c) 2011 (d) 2017 11. Find the difference between 18 years 10 months and 9 years 4 months? 12. Ram joined a factory on September 10, 2016. He worked for 25 days only. On which date Ram left the factory? 13. What time will it be— • 5 hours after 3:30 p.m.? • 6 hours after 12 midnight? • 4 hours before 11:30 p.m.? • 12 hours after 12 noon? 14. Radhika started at 0730 hours by her car or Sunday and reached Shimla in exactly 10 hours. What time (in a.m./p.m.) did she reach Shimla? 15. 7 years 2 months = (a) 83 months (b) 85 months (c) 84 months (d) 86 months 16. Sumit went out to play with his friends at 1700 hours. He played there for 1 hr 30 minutes. At what time did he come back as per 24-hour clock? 17. Find the difference between number of hours: (i) 9:30 a.m. and 9:30 p.m. = hours (ii) 12:00 hours and 7:00 p.m. = hours Page 4 24 M E N T A L M A T H S Tick Tick Tick (Refer to the chapter # 3 and 4 of the NCERT Maths Book of Class IV) Summary 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year = 12 months 1 month = 4 weeks 1 week = 7 days 1 year = 365 days 1 leap year = 366 days 1 fortnight = 15 days 1 year = 52 weeks • A clock has three hands - Hour hand, Minute hand and Second hand. Hour Hand Minute Hand Second Hand • 12-hour clock A day is divided into two periods of 12 hours each. a.m. (Ante Meridiem) p.m. (Post Meridiem) • 12 midnight to 12 noon • Before 12 noon • 12 noon to 12 midnight • After 12 noon 11 12 1 2 3 4 8 10 9 5 6 7 M E N T A L M A T H S 25 • 24-hour clock A day is divided into 24 hours from 0 to 24. 0000 hours (midnight) or 12:00 a.m. 0800 hours or 8:00 a.m. 1200 hours (mid-day or noon) or 12:00 p.m. 1800 hours or 6:00 p.m. 2400 hours or 0000 hours (midnight) or 12:00 a.m. Questions 1. Convert 8 weeks 6 days into days. 2. How many minutes are there in 6 hours? 3. Read the clock and write the time. 4. Sunita spent three hours in shopping. She retuned home at 5 o’ clock. At what time did she start shopping? 5. How many months in a year have exactly thirty days? 6. In 24 hours clock time, 12 midnight is written as 0000 hours or . 7. What was the time 40 minutes before 8:30 a.m.? 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 26 M E N T A L M A T H S 8. Tell the time in a.m. or p.m. • 1730 hours = • 0640 hours = • 2150 hours = • 2340 hours = • 1335 hours = • 1225 hours = 9. Amita leaves for school at 6:45 a.m. and reaches school at 7:20 a.m. How long does she take to reach school? 10. Which of the following is a leap year? (a) 2001 (b) 2008 (c) 2011 (d) 2017 11. Find the difference between 18 years 10 months and 9 years 4 months? 12. Ram joined a factory on September 10, 2016. He worked for 25 days only. On which date Ram left the factory? 13. What time will it be— • 5 hours after 3:30 p.m.? • 6 hours after 12 midnight? • 4 hours before 11:30 p.m.? • 12 hours after 12 noon? 14. Radhika started at 0730 hours by her car or Sunday and reached Shimla in exactly 10 hours. What time (in a.m./p.m.) did she reach Shimla? 15. 7 years 2 months = (a) 83 months (b) 85 months (c) 84 months (d) 86 months 16. Sumit went out to play with his friends at 1700 hours. He played there for 1 hr 30 minutes. At what time did he come back as per 24-hour clock? 17. Find the difference between number of hours: (i) 9:30 a.m. and 9:30 p.m. = hours (ii) 12:00 hours and 7:00 p.m. = hours M E N T A L M A T H S 27 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 18. How many times does the hour hand move around the clock face in one day? 19. Varsha will arrive at the Mumbai hotel August 29, 2017 and will stay there for three nights. On which date will she check out of the hotel? 20. How long will it take the minute hand to move from to ? 21. Peter left for tour on January 14, 2017 and returned home on March 14, 2017. How long did he remain out? 22. How many times does the minute hand move around the clock in one day? 23. If summer vacations are for 51 days, find how many weeks and days are there during this period? 24. Gauri went to market at 11:30 a.m. and returned after 2 hours 35 minutes. At what time did she return from the market? 25. Rohan went to bed at 2250 hours and got up at 0630 hours. How long did he sleep? Answer Key 1. 62 days 2. 360 minutes 3. 9:35 1:55 11:45 4. 3 o ’ clock Page 5 24 M E N T A L M A T H S Tick Tick Tick (Refer to the chapter # 3 and 4 of the NCERT Maths Book of Class IV) Summary 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds 1 year = 12 months 1 month = 4 weeks 1 week = 7 days 1 year = 365 days 1 leap year = 366 days 1 fortnight = 15 days 1 year = 52 weeks • A clock has three hands - Hour hand, Minute hand and Second hand. Hour Hand Minute Hand Second Hand • 12-hour clock A day is divided into two periods of 12 hours each. a.m. (Ante Meridiem) p.m. (Post Meridiem) • 12 midnight to 12 noon • Before 12 noon • 12 noon to 12 midnight • After 12 noon 11 12 1 2 3 4 8 10 9 5 6 7 M E N T A L M A T H S 25 • 24-hour clock A day is divided into 24 hours from 0 to 24. 0000 hours (midnight) or 12:00 a.m. 0800 hours or 8:00 a.m. 1200 hours (mid-day or noon) or 12:00 p.m. 1800 hours or 6:00 p.m. 2400 hours or 0000 hours (midnight) or 12:00 a.m. Questions 1. Convert 8 weeks 6 days into days. 2. How many minutes are there in 6 hours? 3. Read the clock and write the time. 4. Sunita spent three hours in shopping. She retuned home at 5 o’ clock. At what time did she start shopping? 5. How many months in a year have exactly thirty days? 6. In 24 hours clock time, 12 midnight is written as 0000 hours or . 7. What was the time 40 minutes before 8:30 a.m.? 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 26 M E N T A L M A T H S 8. Tell the time in a.m. or p.m. • 1730 hours = • 0640 hours = • 2150 hours = • 2340 hours = • 1335 hours = • 1225 hours = 9. Amita leaves for school at 6:45 a.m. and reaches school at 7:20 a.m. How long does she take to reach school? 10. Which of the following is a leap year? (a) 2001 (b) 2008 (c) 2011 (d) 2017 11. Find the difference between 18 years 10 months and 9 years 4 months? 12. Ram joined a factory on September 10, 2016. He worked for 25 days only. On which date Ram left the factory? 13. What time will it be— • 5 hours after 3:30 p.m.? • 6 hours after 12 midnight? • 4 hours before 11:30 p.m.? • 12 hours after 12 noon? 14. Radhika started at 0730 hours by her car or Sunday and reached Shimla in exactly 10 hours. What time (in a.m./p.m.) did she reach Shimla? 15. 7 years 2 months = (a) 83 months (b) 85 months (c) 84 months (d) 86 months 16. Sumit went out to play with his friends at 1700 hours. He played there for 1 hr 30 minutes. At what time did he come back as per 24-hour clock? 17. Find the difference between number of hours: (i) 9:30 a.m. and 9:30 p.m. = hours (ii) 12:00 hours and 7:00 p.m. = hours M E N T A L M A T H S 27 11 12 1 2 3 4 8 10 9 5 6 7 11 12 1 2 3 4 8 10 9 5 6 7 18. How many times does the hour hand move around the clock face in one day? 19. Varsha will arrive at the Mumbai hotel August 29, 2017 and will stay there for three nights. On which date will she check out of the hotel? 20. How long will it take the minute hand to move from to ? 21. Peter left for tour on January 14, 2017 and returned home on March 14, 2017. How long did he remain out? 22. How many times does the minute hand move around the clock in one day? 23. If summer vacations are for 51 days, find how many weeks and days are there during this period? 24. Gauri went to market at 11:30 a.m. and returned after 2 hours 35 minutes. At what time did she return from the market? 25. Rohan went to bed at 2250 hours and got up at 0630 hours. How long did he sleep? Answer Key 1. 62 days 2. 360 minutes 3. 9:35 1:55 11:45 4. 3 o ’ clock 28 M E N T A L M A T H S 5. 4 Months 6. 2400 hours 7. 7:50 a.m. 8. 5:30 p.m. 6:40 a.m. 9:50 p.m. 11:40 p.m. 1:35 p.m. 12:25 p.m. 9. 35 minutes 10. (b) 2008 11. 9 years 6 months 12. October 5, 2016 13. 8:30 p.m. 6:00 a.m. 7:30 p.m. 12:00 a.m. 14. 5:30 p.m. 15. (d) 86 months 16. 1830 hours 17. (i) 12 hours (ii) 7 hours 18. 2 times 19. September 1, 2017 20. 30 minutes 21. 59 days 22. 24 times 23. 7 weeks 2 days 24. 2:05 p.m. 25. 7 hours 40 minutesRead More
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1. What is the main theme of "Tick Tick Tick" at Level 4 Class 1? | ![]() |
2. How can teachers effectively use "Tick Tick Tick" in the classroom? | ![]() |
3. What kind of exercises or activities accompany "Tick Tick Tick"? | ![]() |
4. What skills does "Tick Tick Tick" aim to develop in Level 4 Class 1 students? | ![]() |
5. How does "Tick Tick Tick" align with educational standards for young learners? | ![]() |