-
Jugs and Mugs
JUGS AND MUGS
Bunny and Banno Celebrate their Wedding Anniversary.
Do you remember the wedding in Bunny's family last year? (See Math-Magic Class III page 153). Bunny and Banno decided to have a party one year after their wedding.
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.
The frog hopped along with nine other friends .He said – Oh, we only want 100 millilitres each!
OK., here is your kheer – said the cat, while serving the kheer. She took 10 glasses and poured 100 millilitres 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 is millilitres = litre.
Now you write it 10 × 100mL= ml.
Look, a group of ants is marching here! – the grasshopper said.
The kheer is finished. Now what can we do? – the cat said sadly.
Don't worry, they won't drink much. Each of them will take only one millilitre. That is all. I will share my kheer with them – the elephant said and wiped the cat's tears with his ear.
How many are you all together?–the elephant asked.
We are only one thousand – said the ants.
The cat said – Oh no, one thousand! We have to give kheer to 1000 ants!
After thinking the elephant said – No problem, I can manage.
Each ant drinks 1 millilitre of kheer .
So, 1000 ants drink: 1000 × 1 mL = mL.
Ah! they will need the same as the ten frogs – said the donkey.
All the ants drank the kheer. Everyone was happy. They sang and danced to celebrate the wedding anniversary.
Who can have 1 Litre Kheer
Do you like kheer? What do you call it at home?
How much kheer can you have?
Can you drink 1 L water at one time?
The donkey is trying to look for different ways to add up to 1 litre. Help him complete the chart.
Look Around
Look at these pictures. Now look for some other things we get in packets or bottles like these. Make your own list.
My Litre Bottle
Have you seen a one –litre water bottle?
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 Bottle 1 Bottle 2 Bottle 3 Look what Adithyan is saying.
How much water does his small bottle hold? ml
Then how much water does Leela's bottle hold? ml
Ramu's Measuring Bottle
Ramu got an empty 250 mL coconut oil bottle. Look at the picture and discuss what he did to make his big measuring bottle.
My 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.
Guess and check
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.
My guess My measure Mug Glass Pot 
Neetu in Hospital
Neetu has to take 3 injections in a day for 5 days.
How much medicine will she need for one day?ml
How much medicine in all for 5 days?ml
How much do we use at a time?
- Eye drops We use less than 1mL at a time.
- _____________ _____________________________________________
- _____________ _____________________________________________
- _____________ _____________________________________________
List things we use more than one litre at a time.
- Water for taking bath
- _________________________________________________________
- _________________________________________________________
- _________________________________________________________
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?
- 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?
3. 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?ml
Water – Water
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 L
How many litres of water does your family use in a day? Guess and fill in this table.
Drops and Drops Make an Ocean
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. _________
In a week? ___________
In a month? _________
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.