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प्रश्न
How much money will Dinu pay for 4 kg brass?
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उत्तर
The rate of 1 kg of brass according to Dinu’s price list = Rs 180
So, Dinu will pay for 4 kg of brass = Rs 180 × 4 = Rs 720
This can be calculated as follows:
| 100 | 80 | |
| 4 | 100 × 4 | 80 × 4 |
| 400 | 320 |
By adding the digits in last row you will get 400 + 320 = 720 Hence, Dinu will pay Rs 720 for 4 kg of brass.
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संबंधित प्रश्न
What about you? Do you also find Maths difficult?
What is the most difficult thing in your Maths book?
What do you think is the easiest lesson in maths?
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- How much loan was taken?
- How much money was paid back?
Do it mentally and write the answers.
| 2 × 6 = ______ | 4 × 80 = ______ |
| 20 × 6 = ______ | 4 × 81 = ______ |
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| 3 × 42 = ______ | 31 × 9 = ______ |
Kiran has bought some junk from junk collectors.
Look at the rate list to see today's rates. Help Kiran to find out the cost of the junk.
| Rate-List | |
| Kind of Junk | Price of 1 kg |
| 1. Waste Paper... | Rs. 4/- |
| 2. Newspaper... | Rs. 5/- |
| 3. Iron... | Rs. 12/- |
| 4. Brass... | Rs. 170/- |
| 5. Plastic... | Rs. 10/- |
Find the cost of 23 kg of waste paper.
| Dinu's Rate-List | |
| Kind of Junk | Price of 1 Kg |
| 1. Newspaper... | Rs. 6/- |
| 2. Iron... | Rs. 14/- |
| 3. Brass... | Rs. 180/- |
| 4. Plastic... | Rs. 12/- |
| 5. Water paper... | Rs. 4.50/- |
How much money will Dinu pay for 32 kg iron?
I bought 1 kg newspaper for Rs 5, but sold it for Rs 6. How much money did I earn by selling 152 kg of a newspaper?
First guess the answer and then calculate:
37 × 18 = ?
First guess the answer and then calculate:
45 × 24 = ?
