NCERT solutions for Math - Magic [English] Class 4 chapter 7 - Jugs and Mugs [Latest edition]

The donkey asked- 500 milliliters of kheer? Isn’t that more than a liter?

The donkey looked confused and asked - Ten glasses of 100 mL each. How much is that?

The cat said — Oh no, to 1000 ants!

After thinking the elephant said — No problem, I can manage. Each ant drinks 1 milliliter of kheer.
So, 1000 ants drink: 1000 × 1 mL = ______ mL.

Do you like kheer? What do you call it at home?

How much kheer can you have?

Can you drink 1 L of water at one time?

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

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

Have you seen a one-liter water bottle?

Collect a 1-liter bottle and some other small bottles. Guess how many times you have to pour from each of the small bottles to fill the liter bottle.

Check if your guess is correct and fill the table.

Look what Adithyan is saying.

How much water does his small bottle hold?

Then how much water does Leela's bottle hold?

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

Find your own way to make a bottle which can measure 200 mL, 400 mL, 600 mL, 800 mL and 1 litre. Discuss with your friends and teacher how you made this.

Look at the buckets, mugs, glasses and other things in your house. Guess how much water each can hold. Check if your guess is right by using your measuring bottle.

Neetu has to take 3 injections a day for 5 days. One injection gives 5 mL of the medicine to your body.

1. How much medicine will she need for one day?
2. How much medicine in all for 5 days?

How much do we use at a time?

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

• Water for taking bath.
• __________________
• __________________
• __________________

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?

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?

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 milliliters of medicine does she have to take every morning?

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

Total water used by them.

How many liters of water does your family use in a day? Guess and fill in this table.

Is there any tap in your school or your home which is leaking?

How much water do you think we waste through a leaking tap?

Place your litre jar below the leaking tap so as to catch all the drops in the bottle. Note the time. After one hour check, how much water is in the bottle?

Find out how much water is wasted in a day?

1. In a week?
2. In a month?
3. In a year?

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.