CBSE Class 2 Mathematics Chapter 7: Jugs and Mugs NCERT Solutions
CBSE Class 2 Mathematics Chapter 7, 'Jugs and Mugs,' introduces children to measuring liquids and understanding capacity. This chapter uses fun activities and questions to help students estimate and compare how much different containers can hold, using things they find in the kitchen. The solutions explain how to guess amounts like drops of lemon juice, figure out how many lemons and sugar are needed for a drink, compare how easily liquids pour from different shapes, and learn that jugs and glasses hold different volumes. These NCERT Solutions guide students step-by-step, encouraging them to guess, try things out, and check their answers. This helps them really understand measurement and builds a good base for learning more about volume and capacity later on.
Quick info
| Board | CBSE |
|---|---|
| Class | Class 2 |
| Subject | Mathematics |
| Session | 2026 |
| Language | English |
| Type | NCERT Solutions |
| Chapter | Chapter 7 |
Chapter summary
Chapter 7, 'Jugs and Mugs,' focuses on introducing Class 2 students to the concept of liquid measurement and capacity. The NCERT Solutions cover practical exercises involving estimation of volumes, such as counting drops of juice or cups of water. Students learn to compare the capacity of different vessels and understand relationships between smaller and larger containers, like small glasses filling a big glass or a jug. The solutions emphasize hands-on learning and estimation skills, preparing students for basic measurement concepts.
Learning outcomes
- Understand the concept of liquid measurement and capacity.
- Estimate the number of drops or cups to fill a container.
- Compare the volumes of different vessels.
- Relate the capacity of smaller containers to larger ones.
- Practice estimation and verification through practical activities.
Topics covered
Paper topics
- Introduction to Capacity
- Liquid Measurement
- Estimation of Volume
- Comparing Volumes
- Relationship between different containers
- Jugs
- Glasses
- Mugs
- Bowls
- Pots
- Lemonade preparation
- Volume units (drops, cups, glasses)
Important topics
- Understanding Capacity
- Estimating Liquid Amounts
- Comparing Container Volumes
- Relating Small and Large Containers
- Practical Measurement Activities
PDF preview
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Questions and Solutions
Page No 47: Question 1
– How many drops of lemon juice do you get from half a lemon?
– How many drops of lemon juice do you get from a full lemon?
– How many drops of lemon juice fill one spoon?
This question encourages practical estimation and experimentation. The exact number of drops will vary based on the size of the lemon, the juiciness of the lemon, and the size of the drops. Students are encouraged to try this activity themselves.
For half a lemon: You might get around 15-30 drops. (This is an estimate, actual count may differ).
For a full lemon: You might get around 30-60 drops. (This is an estimate, actual count may differ).
For one spoon: You might need around 10-20 drops to fill a teaspoon. (This is an estimate, actual count may differ).
Note: The disclaimer in the source material correctly states that the answer may vary from student to student based on their experience and the materials used. It is best for students to perform this experiment themselves.
Page No 48: Question 1
– How many lemons will you need?
– How many spoons of sugar will you take?
This question requires estimation based on typical recipes. The exact quantities can vary depending on the size of the glasses and personal preference for taste.
Lemons needed: If one glass of lemonade requires about half a lemon, then for 6 glasses, you might need around 3 lemons. If one glass requires a whole lemon, you would need 6 lemons. A reasonable estimate could be 3-6 lemons.
Spoons of sugar: If one glass needs 1-2 spoons of sugar, then for 6 glasses, you might need 6-12 spoons of sugar. A common estimate could be 8-10 spoons of sugar.
Note: As mentioned in the source, the answer may vary based on individual experience and preference. Students should be encouraged to think about typical amounts used.
Page No 48: Question 2
Yes, it is generally easier to pour liquid into a smaller container like a glass from a jug compared to pouring from a large, wide-mouthed bucket. Jugs are often designed with a spout and a handle, which provides better control for pouring smaller amounts accurately. Buckets, being much larger and wider, can make it difficult to control the flow of liquid into a smaller opening, potentially leading to spills.
Page No 49: Question 1
Given: Cost of 1 big glass of lemon drink = Rs 10
We are told that two big glasses of lemon drink fill one jug. We are also given the cost of one big glass of lemon drink.
Cost of 1 big glass of lemon drink = Rs 10
Since 2 big glasses fill the jug, Shabnam needs to buy the equivalent of 2 big glasses to get a full jug.
Cost of 2 big glasses = Cost of 1 big glass × 2
Cost of 2 big glasses = Rs 10 × 2 = Rs 20
Therefore, Shabnam needs to pay Rs 20 to buy one jug full of lemon drink.
Page No 49: Question 2
– How many small glasses of lemon drink will fill the jug?
– How many small glasses will fill half the jug?
Given: 2 small glasses = 1 big glass
Given: 2 big glasses = 1 jug (from previous question context)
We need to find out how many small glasses are equivalent to the volume of the jug.
First, let's find the total number of small glasses that fill the jug:
We know that 1 big glass is filled by 2 small glasses.
We also know that 1 jug is filled by 2 big glasses.
So, to fill the jug, we need 2 big glasses. Each of these big glasses requires 2 small glasses.
Total number of small glasses to fill the jug = (Number of small glasses per big glass) × (Number of big glasses per jug)
Total number of small glasses = 2 × 2 = 4
Therefore, 4 small glasses of lemon drink will fill the jug.
Next, let's find out how many small glasses will fill half the jug:
If the whole jug is filled by 4 small glasses, then half the jug will be filled by half the number of small glasses.
Number of small glasses for half the jug = Total number of small glasses / 2
Number of small glasses for half the jug = 4 / 2 = 2
Therefore, 2 small glasses of lemon drink will fill half the jug.
Page No 50: Question 1
Guess which vessel holds the least water. Which vessel holds the most water?
Now, you collect different vessels from your kitchen. Use the same cup to fill each of them. Count the number of cups of water each of them can hold. First guess and then do it.
This is a practical activity designed to help students understand and compare the capacities of different vessels through estimation and experimentation.
Guessing:
Students should look at the vessels and guess which one is the smallest and which one is the largest in terms of how much water they can hold.
Example Guess: The glass might hold the least water, and the pot might hold the most water.
Experimenting:
1. Collect different vessels (e.g., a jug, a glass, a mug, a bowl, a small pot).
2. Take one measuring cup (e.g., a small plastic cup or a measuring jug).
3. Use this same cup to fill each vessel with water, counting how many cups it takes for each.
4. Record the counts.
Observation and Conclusion:
After performing the experiment, students will be able to see the actual number of cups each vessel holds.
Example Observation:
- Glass: 3 cups
- Mug: 5 cups
- Bowl: 7 cups
- Jug: 12 cups
- Pot: 15 cups
Based on this example, the glass holds the least water (3 cups), and the pot holds the most water (15 cups).
Note: The actual results will depend on the specific vessels used by the students.
Common mistakes
- Difficulty in accurately estimating quantities.
- Confusing capacity with other measurement units.
- Inconsistent counting when filling vessels.
- Not understanding the relationship between different container sizes.
Revision tips
- Perform the kitchen experiments with different vessels to build practical understanding.
- Focus on the estimation aspect before calculating the exact answer.
- Draw simple diagrams to visualize how smaller containers fill larger ones.
- Discuss your guesses and findings with classmates or teachers.
Practice MCQs
Q1. Which of these would likely hold the MOST water?
Explanation: A jug is typically designed to hold a larger volume of liquid compared to a cup, mug, or bowl, making it the most likely to hold the most water.
Q2. If 2 small glasses fill a big glass, how many small glasses are needed to fill a jug if 2 big glasses fill the jug?
Explanation: Since 2 small glasses fill 1 big glass, and 2 big glasses fill the jug, you would need 2 x 2 = 4 small glasses to fill the jug.
Q3. What is the primary concept introduced in the 'Jugs and Mugs' chapter?
Explanation: The chapter 'Jugs and Mugs' focuses on understanding how much liquid different containers can hold, which is the concept of liquid measurement and capacity.
Q4. Why is it easier to pour from a jug than a bucket into a glass?
Explanation: Jugs are designed with a shape and often a spout that makes pouring liquids into smaller containers like glasses much easier and more controlled than pouring from a wide-mouthed bucket.
Frequently asked questions
What is the main topic of Chapter 7 for Class 2 Mathematics?
Chapter 7, 'Jugs and Mugs,' introduces Class 2 students to the concepts of liquid measurement and capacity, focusing on estimating and comparing volumes of different containers.
How do the NCERT Solutions for 'Jugs and Mugs' help students?
These solutions provide clear, step-by-step explanations for the exercises, helping students understand how to estimate liquid quantities, compare container capacities, and perform practical measurement activities.
Are the answers in the 'Jugs and Mugs' chapter exact or estimated?
Many questions in this chapter involve estimation and practical experience, so the answers may vary. The solutions guide students on how to approach these estimations and perform the experiments themselves.
What kind of containers are discussed in this chapter?
The chapter discusses various common kitchen containers like jugs, glasses, mugs, pots, and bowls, relating their capacities to each other and to smaller units like drops or cups.
How can students use these solutions for revision?
Students can use these solutions to review the concepts of capacity and volume, understand the methods for estimation and comparison, and check their understanding of the relationships between different container sizes.
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