NCERT Solutions for Class 4 Maths Chapter 7

NCERT Solutions for Class 4 Maths Chapter 7 - Jugs And Mugs

We learn about measurements in NCERT Solutions for Class 4 Maths Chapter 7– Jugs and Mugs. In this lesson, we will learn about volume or capacity through a story. There is a party in the animal kingdom, and with the help of this funny story, we will learn how to measure liquids. Let us quickly check the basics of ‘Measurements’ before solving the questions.

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NCERT Solutions for Class 4 Maths Chapter 7 Jugs And Mugs part-1

What is Capacity?

The quantity of a liquid such as water, milk or juice, etc. is called its volume. Capacity is the volume of a liquid that a container can hold. We measure volumes of liquids such as water, milk, juice, petrol, or kerosene with a container whose capacity is already known.

The standard units of capacity are liter and milliliter.

1000 millilitres (ml) = 1 litre ( l )

1000 litres (l)   = 1 kilolitre (kl)

  • A milliliter is a very small unit of capacity. For example, the capacity of a teaspoon is about 5 ml.

  • A liter is a bigger unit of capacity. For example, the capacity of a water bottle can be about 1l.

Smaller quantities of liquids are measured in milliliters and liters. Larger quantities of liquid are measured in kilolitres. The measuring cylinder is used to measure the volume of liquids.

With this concept, you will now understand what the animals are talking about at the party.

Let us now understand the conversion of capacity.

Conversion of capacity means converting a higher unit into a smaller unit or a smaller unit into a higher unit.

When we convert a larger unit, say kiloliter, into a smaller unit, say milliliter, then we multiply the quantity by 1000. When we need to convert a smaller unit, say milliliter, into a larger unit, say kiloliter, then we divide the quantity by 1000.

Example: Convert 8 liters into milliliters.

Solution: 1l = 1000 ml

8l = 8 x 1000 ml

=  8000 ml

Note: Never forget to put the units after the quantity. Marks will be deducted in your exam if you forget to put the unit.

Let us see how we use this in real-life with some examples.

Example 1: Radha drank 8 glasses of water in a day. If the capacity of a glass is 250 ml, how much water did she drink?

Solution: Capacity of 1 glass = 250 ml

Capacity of 8 glasses = 8 x 250 ml = 2000 ml = 2l

Now, we can understand the lesson properly and solve the questions given in the chapter. We need measuring containers to measure the volume of a liquid. There are various measuring containers used for measuring the quantities of liquids. You must have seen your mother using measuring containers while cooking. You also can try different experiments at home to make measuring bottles, and then you can check the quantity of water or any other liquid.


So what did we learn today? We learned the measurement of liquid in terms of volume. We have learned the unit of volume, and how we can convert a unit into another unit. This lesson is very helpful in our daily activities. We can check whether the milkman is giving milk in the right quantity or not. We can measure and drink water every day. We should have at least 2l of water every day to keep ourselves healthy. Whenever you offer juice or cold drinks to your friends, you can equally distribute it among them. Hence, learning the concept of volume is very beneficial for all students.

FAQs (Frequently Asked Questions)

Q1. What do you Understand by Capacity?

Ans. Capacity is the volume of a liquid that a container can hold.

Q2. Why do Students Need to Learn Measurements?

Ans. Measurements make a very important aspect of Maths. Every object is measured in terms of weight, mass, volume, distance, and time. Without measurements, we cannot do anything in life. If you are sick then you need to take medicine in the proper amount. If you take a greater amount of or a lesser amount of medicine then it is not going to cure you. So you have to measure the correct amount of medicine. Also, measurement is useful when you cook. Without accurate measurements of ingredients, you will not be able to cook good food. When you go to buy vegetables then you should have an idea of the measurements to accurately weigh the vegetables. Without a clear understanding of capacity, you may not be able to pour 1l of juice in ten glasses for your friends. So you see, learning measurement is essential for our daily activities.

Q3. What is the Significance of NCERT Solutions?

Ans. NCERT Solutions are prepared as per the CBSE guidelines. The lessons are in the form of narratives, poems, stories, puzzles, comic strips, etc. There is a conscious effort to avoid rote learning and encourage children to challenge themselves so that they get more space to explore. Stories and narratives have been used as a tool to sensitize the child so that the child can relate to things easily. Vedantu has adopted this formula and prepared the NCERT Solutions in an interactive manner to encourage the active participation of students.

Q4. Why Should I Choose Vedantu to Prepare for my Exams?

Ans. Vedantu has a very well-structured study material, and reference notes with lots of worksheets and mock tests. Taking these tests and solving the worksheets will help you to improve your scores in the exams. Vedantu has a panel of qualified, and experienced teachers. The teachers and the subject experts have done extensive research to come up with authentic and accurate NCERT Solutions that will further act as a useful resource for students. They can clear all your doubts and groom you for your exam.

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