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Chapter 12 of 15
Chapter Summary

Racing Seconds

CBSE · Class 5 · Mathematics

Summary of Racing Seconds for CBSE Class 5 Mathematics. Key concepts, important points, and chapter overview.

41 questions60 flashcards5 concepts

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Overview

Time can be measured in hours, minutes, and seconds. Seconds are used for very short actions, while minutes and hours are used for longer ones. In a race, seconds help show small differences between participants. Time can also be written in 12-hour format and 24-hour format. Many problems in this ch

Key Concepts

Seconds are used for activities

Seconds are used for activities that take a very short time, such as blinking of eyes, reading a sentence, coloring a small shape, or washing a plate.

Sixty movements of the seconds hand

Sixty movements of the seconds hand lead to a shift in the minute hand. This shows that 60 seconds make 1 minute.

Raghu took 20 seconds to read

Raghu took 20 seconds to read a sentence in his book. Rani took 30 seconds to color a rectangle. Raghav took 60 seconds to move from his home to the g

Longer activities are measured in hours

Longer activities are measured in hours and minutes. Raghav studies Mathematics, English, Hindi, and The World Around Us, taking 50 minutes for each s

Elapsed time means the time passed

Elapsed time means the time passed between a start time and an end time. Raghu left at 08:00 hours and reached at 09:05 hours, so the travel time is 1

Learning Objectives

  • Understand when to use seconds, minutes, and hours
  • Compare short and long time durations
  • Read and convert time in 12-hour and 24-hour formats
  • Find elapsed time in simple daily-life situations
  • Add time in hours and minutes step by step

Frequently Asked Questions

What are the important topics in Racing Seconds for CBSE Class 5 Mathematics?
Racing Seconds covers several key topics that are frequently asked in CBSE Class 5 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Racing Seconds — CBSE Class 5 Mathematics?
Understand the core concepts first, then work through the 41 practice questions available for this chapter. Revise formulas and 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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