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प्रश्न
Find out how much water is wasted in a day?
- In a week?
- In a month?
- In a year?
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उत्तर
In one hour 1 L water is wasted
So, in 1 day or 24 hours water wasted = 1 L × 24 = 24 L.
- In one day 24 L of water is wasted
So, in one week or 7 days
= 24 L × 7
= 168 L. - In one day 24 L of water is wasted
Therefore, in a month which has 30 days, water wasted
= 24 L × 30
= 720 L. - In one month 720 L of water is wasted
Therefore in one year, which has 12 months of water wasted
= 720 L × 12
= 8640 L.
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संबंधित प्रश्न
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 |
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.
| Bottles | My guess | My measure |
| Bottle 1 | ||
| Bottle 2 | ||
| Bottle 3 | ||
 |
 |
What are Naima and Jeetu doing?
Naima thinks she will have to pour around 3 glasses of water to fill the jug. What do you think?
Get a 1 litre bottle (can be an empty bottle of water, oil etc.). Now collect some bottles and a mug, jug, glass, bowl, etc. at your house. Use the 1 litre bottle to check which of these holds more than 1 litre and which one holds less than 1 litre. Make a small drawing if you like.
| Less than 1 litre | More than 1 litre |
| bowl | big cooking pot |
Match the Right Pairs
| About 12 liters |
(to measure milk) |
| Less than Half litre |
(water tank) |
| About 5 litres |
(bucket) |
| 1000 litres |
(eye drops bottle) |
| Half litre |
(water suraahi) |
For making 6 glasses of lemon drink –
- How many lemons will you need?
- How many spoons of sugar will you take?
There is a fair in Chaitra's village. Chaitra, Nazim and Aneesh want to put up a stall to sell lemon drink. They make a 
bucket full of lemon drink.
They use two 
different sizes of glasses.
Aneesh got a 
jug.
Do you think it is easier to pour into a 
glass from a jug than a bucket?
Anil is a milkman. He gives the same amount of milk at Rani's house every day. He uses a 
mug three times to fill Rani's milk pot 
.
One day Rani's mother gave her a different 
pot to take milk. Every day Rani's pot would fill to the top. But today Rani found that the pot 
was not filled completely.
Do you think Anil has given Rani less milk? Help her.
How much water will fill a balloon?
