NCERT Class 4 Maths Chapter-7 jugs And Mugs

NCERT Solutions for Class 4 Maths Chapter-7

This page consists of NCERT Solutions for Chapter 7 jugs And Mugs prepared by Maths experts. All the questions asked in the Mugs And Mugs of NCERT textbook are solved with relevant methods recommended by CBSE.

A brief explanation of Chapter 7 jugs And Mugs.

Chapter 7 jugs And Mugs is all about liquids measurements. Like how to measure water, milk, oil and other daily used liquids at home or school what are the units to measure these liquids and how we are communicating this. Chapter 7 Mugs And Mugs covers the basic understanding of litre, millilitres and decimetres. apart from this chapter gives you an idea about how to add different units. You will get the answer to the following questions in this chapter like

The elephant is drinking how many litres of water- The answer is 50 litres of water.

The giraffe is drinking ______ litres.

The cow is drinking ______ litres.

Then came the squirrel. She said I can't drink 1 litre, please give me only 500 millilitres.

The donkey asked — 500 millilitres of kheer? Isn't that more than a litre?

The fox said — Come on, don't behave like a donkey!

One litre is 1000 millilitres, so 500 millilitres is half a litre.

Find a free pdf of NCERT Solutions for Chapter 7 Jugs And Mugs

1. The elephant is drinking 50 litres of kheer. The giraffe is drinking_____________litres. The cow is drinking__________litres. Then came the squirrel. She said I can’t drink 1 litre of kheer, please give me only 500 millilitres. The donkey asked 500 millilitres of kheer? Isn’t that more than a litre? The fox said Come on, don’t behave like a donkey! One litre is 1000 millilitres, so 500 millilitres is half a litre.

Ans: The giraffe is drinking 10 litres and the cow is drinking 20 litres.

2. OK, here is your kheer — said the cat, while serving the kheer. She took 10 glasses and poured 100 millilitres of kheer in each glass. The donkey looked confused and asked — Ten glasses of 100 mL each. How much is that? The fox got another chance to show off! He said Ah, that is simple! 10 times hundred millilitres are_________________millilitres = _______________litre. Now you write it 10 × 100 mL =____________

Ans: 1 glass has 100 mL of kheer

10 glasses have 10 × 100 mL= 1000 mL

So, 10 times 100 millilitres are 1000 millilitres.

1 L = 1000 mL

∴ 10 times 100 mL = 1000 mL

10×100 mL= 1 L

3. Each ant drinks 1 millilitre of kheer. So, 1000 ant’s drink: 1000 ×1 mL=________ml.

Ans: If each ant drink 1 milliliter of kheer.

Then, 1000 ants drink 1000 × 1 mLof kheer that is1000 ml that is 1000´1=1000

ml

4. The donkey is trying to look for different ways to add up to 1 litre. Help him complete the chart.

Ans: We know 1000 mL=1 L

Thus, we have to make the sum of the numbers 1000 as the result is given 1 L. Thus, the resultant box will be,

Any student can make changes but we have to make sure that the resultant sum of the given numbers must be 1000.

5. Look Around Look at these pictures. Now look for some other things we get in packets or bottles like these. Make your own list.

Packet	How many mL or L?
Milk	500 ml

Ans: : As there neither any product nor the amount of any product is mentioned here. Thus, it can be any product with any amount.

Packet	How many mL or L?
Milk	500 ml
Oil	200 ml
Salt	250 ml
Blue	250 ml
Vinegar	15l ml

6. Collect a 1-litre bottle and some other small bottles. Guess how many times you have to pour from each of the small bottles to fill the litre bottle. Check if your guess is correct and fill the table.

Bottles	My guess	My measure
Bottles 1
Bottles 2
Bottles 3

Ans: : As the understanding capacity of each person is different from one another. Thus, the measurements may and may not be same.

Bottles	My guess	My measure
Bottles 1	200 ml	190 ml
Bottles 2	1000 ml	900 ml
Bottles 3	1L	1.5L

7. Look what Adithyan is saying. How much water does his small bottle hold?_____________I poured two small bottles of water to fill this 1-litre bottle.

Adithyan: I poured two small bottles of water to fill this 1 litre bottles. Then how much water does Leela’s bottle hold?_____________To fill the 1- litre bottle I need to pour water 5 times from my small bottle.

Ans: Ramu pours 2 small bottles of water to fill a bottle of 1 litre.

1 L = 1000 mL

So, the capacity of one big bottle = 1000 mL

Tofill the big bottle if Ramu uses the small bottle 2 times then the capacity of the small bottle, 1000mL = 500mL

2

Therefore, Ramu can hold 500 mL of water in his bottle. Leela pours 5 small bottles of water to fill a1-litre bottle. 1000 mL = 1 L

So, the capacity of the big bottle = 1000 mL

To fill the big bottle Leela uses the small bottle 5 times.

So, the capacity of the small bottle = 1000mL = 200ml

5

Thus, Leela can hold 200 mL of water in her small bottle.

8. Ramu’s Measuring Bottle got an empty 250 mL coconut oil bottle. Look at the picture and discuss what he did to make his big measuring bottle.

Ans: Two empty bottles will be taken by Ramu, one large sized bottle and the other 250 mL coconut oil bottle. Ramu will fill a 250 mL bottle with water and then dump it all into the larger bottle.

He will now write 250 mL on the huge bottle's level.

He will repeat the operation, this time marking the level at 500 mL.

He will fill the 250 mL container again, but this time he'll record the level as 750 mL.

He will go through the process once more, this time marking the level at 1 litre. In this way, Ramu was able to make changes.

9. Neetu in Hospital Neetu has to take 3 injections in a day for 5 days. How much medicine will she need for one day?

Ans: 1 injection contains 5 mL of medication.

Neetu will be required to receive three shots per day for the next five days.

As a result, the total amount of medicine in three injections is 3×5 mL=15 mL

As a result, Neetu will require 15 mL of medicine in one day. 15 mL is the amount of medicine Neetu requires in one day.

Neetu's pharmaceutical requirements in 5 days 5×15 mL=75 mL

As a result, Neetu will require 75 mL of medicine in 5 days.

10. How much do we use at a time?

• Eye dropsWe use less than 1 mL at a time.
• _________________________
• _________________________
• __________________________

Ans: As in the question there is neither any particular thing is mentioned nor the amount. The amounts can be varied accordingly, the given amount is not fixed for each and every person.

Eye drops	We use less than 1 mL at a time.
Injection	We use less than 10 mL at a time.
Tea	We should take less than 200 mL at a time
Water	We can take less than 300 mL at a time

11. List things we use more than one litre at a time.

• Water for taking bath
• ________________________
• ________________________
• ________________________

Ans: The list which we have used or consumed more than 1 L are,

• Water for taking bath.
• Water for washing cloth.
• Water we should drink per day.
• Amount of oil needed to fill a motorbike.

12. Practice Time Amina’s water bottle holds one litre of water. She drank 250 mL of water and her friend Govind drank 150 ml. How much water is left in her bottle?

Ans: Capacity of Amina’s water bottle = 1 L

1 L =1000 mL

Amina's water bottle has a capacity of 1000 ml. Amina drank 250 millilitres of water.

Govind drank 150 millilitres of water.

250 + 150 mL = 400 mLof water consumed by both

1000 mL- 400 mL = 600 mL of water remaining in the bottle As a result, Amina's bottle has 600 mL of water remaining in it.

13. Practice Time Yusuf runs a tea shop. For making a glass of tea he uses 20 mL of milk. Yesterday he made 100 glasses of tea. How much milk did he use?

Ans: Yusuf used 20 millilitres of milk to create a glass of tea.

Yusuf used 100 mL of milk to make 100 glasses of tea =

100 mL×20 mL = 2000 mL

To brew 100 glasses of tea, Yusuf used 2000 mL of milk.

14. Practice Time Radha’s grandma was ill. The doctor gave her a bottle with 200 mL of medicine. She has to take the medicine every morning for 10 days. How many millilitres of medicine does she have to take every morning?______________

Ans: The amount of medicine in the bottle is 200 millilitres.

Radha's grandmother was told by the doctor to take the medicine every morning for ten days.

Grandma has to take a certain amount of medicine every morning,

200 /10 = 20 mL

15. Water-Water The table shows the water used in one day by a family of 5 people. They live in Goodallur village.

Activity	Water in litres(L)
Cooking and drinking	30 L
Washing Clothes	40 L
Cleaning pots, pans	20 L
Bathing	75 L

Total water used by them___________

Ans: 30 liters of water used for cooking and drinking. 40 liters of water were used to wash the clothing.

20 liters of water were used to clean pots and pans. Bathing water use = 75 liters.

30 + 40 + 20 + 75 =165 L total water consumed.

16. Water-Water How many litres of water does your family use in a day? Guess and fill in this table.

Activity	Water used (in buckets)	Water used (in liters)
Cooking and drinking
Washing clothes
Cleaning pots,pans

Ans: Consider: 1 bucket

= 5 L

Activity	Water used (in buckets)	Water used (in liters)
Cooking and drinking	6	30
Washing clothes	4	20
Cleaning pots, pans	2	10

17. Chelannur village has a milk society. Geetha and Ammini went there to buy 4 litres of milk. But the man could not find the one litre measure. He had only a 3 litre and a 5-litre bottle with him. But he gave them exactly 4 litres of milk. Explain how he did this.

Ans: Again, he will fill the 5-litre bottle with milk.

After pouring its content in the 3-litre bottle, 2 litres of milk are left in the 5- litre bottle.

Now, he will now pour 2 litres of milk into the Geetha bottle once more. Geetha's bottle now holds 4 litres of milk.

Both Geetha and Ammini get 4 litres of milk this way.