Ticking Clocks and Turning Calendar — Formula Sheet
CBSE · Class 4 · Mathematics
8 formulas from Ticking Clocks and Turning Calendar (CBSE Class 4 Mathematics) on one page, grouped by topic. Covers Leap Year and February, Dates.
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Formulas and Key Relations
Leap Year and February
Most years = 365 days
Leap year = 366 days
AM, PM, and Digital Time
12:00 AM = 00:00 hours
1:00 PM = 13:00 hours
11:45 PM = 23:45 hours
12:00 PM = 12:00 hours
Hours and Minutes
1 hour = 60 minutes
End time = Start time + Time taken
Full sheet with units and worked examples
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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