Time Goes On Class 3 Notes CBSE Maths Chapter 7 [Free PDF Download]

Time

• Time is something that says by what duration or period something happens.

• Time can be measured by using some devices called calendars or clocks.

• In clocks time is measured in terms of hours, minutes, and seconds.

• In calenders, time is measured in terms of days, months, and years.

Examples

Doing several things can take different amounts of time, some of the examples are below,

Clock

• The clock is a device used to measure time.

• Every day we have 24 hours.

• Each hour has 60 minutes and each minute has 60 seconds.

• A clock has three hands. 

• The bigger hand is the hour hand which moves slowly, and the smaller hand is the minute hand which moves at medium speed. The third hand that is smaller than the minute hand is the second's hand and it moves fastly.

• For one day we have the morning, noon, the evening, or the night.

• We have a 12-hour cycle, the first cycle is from midnight (12:00) to noon (12:00).

• Another cycle is the reverse of the first cycle.

Calendar

• A method of placing the days in a series of papers is called a calendar. 

• We can have days, weeks, and months in a calendar.

• A calendar is usually made for a year, for 365 days.

• In a week we have 7 days.

• In a year we have 12 months.

• The months can be divided into spring, summer, autumn, and winter seasons.

• Each month consists of 30 or 31 days. Except for February, as it has 28 days normally and 29 in the leap year. 

• The leap year comes after every 4 years. Whereas February has 29 days. The year 2020 was a leap year and the next leap year will be 2024.

Solved Example 1: There are ………. Months in a year.

Ans: 12

Solved Example 2: List the months that have 31 days.

Ans: January, March, May, July, August, October, and December.

Solved Example 3: List the months that have 30 days.

Ans: November, April, June, and September.

Solved Example 4: Seven days make a week. True / False

Ans: True

Solved Example 5: Find how many weeks are there in your birth month.

Ans: My birth month is September, it has 4 weeks.

Solved Example 6: What is the speciality of the 15th of August and 2nd of October?

Ans: We celebrate Independence Day on the 15th of August and Gandhi Jayanthi on the 2nd of October.

Age

• The amount of time that a person has spent since born is called age.

• Age is measured in terms of years.

Solved Example 1: Find the age of these kids who are celebrating their birthday.

Celebrating a birthday

Ans: In the image, one of the questions is been solved, in that a birthday cake with four candles is matched to four, we can follow the same method to solve the remaining.

Cake Vs Birthday

Birth Certificate

• It is an official document provided by the Government.

• It has details about the date of birth of a person, the place of birth, and the parents’ names.

Solved Examples

By referring to the image given below answer the following.

Birth certificate

1. How old is Bincy by 02/05/2005?

Ans: Steps to find how old Bincy is,

• From the Birth Certificate we know that Bincy was born on 02/05/2002. 

• As per the question we have to find how old Bincy is, which means we have to find her age. 

• Then we can minus the current date to the date of birth.

• Then it will be, 02/05/2005 - 02/05/2002

• The date and month of birth are the same on both of the dates. Hence we can minus the year 2005 - 2002 = 3

• Hence Bincy will be 3 years old.

2. Bincy was born on 02 ……….. 2002.

Ans: As per the Birth Certificate, Bincy was born on 02/05/2002.

3. On which date this birth certificate was registered?

Ans: It is mentioned in the Birth Certificate that it was registered on 02/05/2002.

4. By 02/05/2010, Bincy will be eight years old. True / False.

Ans: By following the same steps mentioned above, we will calculate the age of Bincy by 02/05/2010.

So we will minus 02/05/2010 by 02/05/2002.

Since both dates and months are the same, we can minus the year.

So, 2010 - 2002 = 8

Hence the given statement is true.

Practise Problems

Q1. Mark these dates in the calendar.

• 5th of every month

• 28th of March

• 17th of November

• 27th of September

Q2. Choose the correct answer from the options below.

The year ………. is a leap year.

If this is the year 2020, then last year it was ……….

If it is the year 2022, then next year will be ………..

Ans1 : 

Calendar

Ans 2: (i) 2020

(ii) The last year will be 2019.

(iii) The next year will be 2023.

Importance of CBSE Class 3 Maths Chapter 7 Time Goes On

• We all need to be punctual and methodical throughout the day. Our output and consistency depend on the way we arrange our daily work schedule. A Class 3 student will understand the concepts of time and will solve Time Maths for Class 3 in the exercise easily.

• Studying Class 3 Maths Chapter 7 will build a concept of time and its units. Students will learn the difference between years, months, days, weeks, hours, and minutes. They will also identify and determine the differences between long-term and short-term works.

• Another objective of this chapter is to cover the concept of the calendar. Students will learn how to look at a calendar in the past and future as well. In fact, they will also learn to calculate the age of a person by using addition and subtraction operations relevant to months and weeks.

Benefits of Studying Vedantu’s Revision Notes for Class 3 Maths Chapter 7 PDF

This PDF file contains a simpler explanation of the concepts of calendar, months, years, dates, days, hours, etc. With their explanations, you will get the following benefits.

1. Proper practice

Get the Time Goes On Class 3 worksheets once you are done with the exercises of the textbook. Practice the sums given to fortify your conceptual foundation.

2. Revise the chapter before an exam

The revision notes will help you to revise this chapter a day before the exam. You can easily recall the concepts explained in the chapter by using the revision notes as a reference.  

3. Developing an approach for particular question patterns

Focus on how the experts have solved the exercise questions and explained the mathematical concepts in the revision notes. Learn how to solve questions related to Ulta Pulta Time easily. Develop a strategy to answer how long does it take for certain chores and activities.

Refer to Chapter 7 Revision Notes for Quick Resolution of Doubts

Why wait then? Download these revision notes for this chapter for free and refer to them at your convenience. Learn how to solve questions of calendar magic by resolving all your queries. Become better at answering time-related questions and score well in the exams.

Important Related Links for CBSE Class 3

Study Materials for CBSE Class 3 Maths