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Chapter 14 of 17
Formula Sheet

Time and Calendar — Formula Sheet

ICSE · Class 4 · Mathematics

14 formulas from Time and Calendar (ICSE Class 4 Mathematics) on one page, grouped by topic. Part of the ICSE Class 4 Mathematics syllabus.

44 questions30 flashcards14 formulas & key relations4 concepts

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14 Entries · 6 Sections

Formulas and Key Relations

Time Measurement

60 seconds = 1 minute

60 minutes = 1 hour

24 hours = 1 day

Calendar and Dates

7 days = 1 week

12 months = 1 year

Time Conversions

Total seconds = (minutes × 60) + seconds

Total minutes = (hours × 60) + minutes

Hours = Total minutes ÷ 60

Days = Total hours ÷ 24

Operations on Time

Add seconds first → carry over minutes if ≥60

Subtract seconds first → borrow 60 if needed

Operations on Time Measures

When adding seconds, if total ≥ 60, convert to minutes and carry over.

When adding minutes, if total ≥ 60, convert to hours and carry over.

1 day = 24 hours

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in Time and Calendar for ICSE Class 4 Mathematics?
Key topics in Time and Calendar include Telling Time Correct to the Nearest Minute, Conversions of Time, Operations on Time Measures, Calendar. Study these first, then practise questions on each for Class 4 exams.
How many formulas are in Time and Calendar?
This sheet lists 14 formulas from Time and Calendar, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Time and Calendar for Class 4 exams?
Learn the core ideas first, then work through the 44 practice questions on Time and Calendar. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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