Advertisements
Advertisements
प्रश्न
First guess the answer and then calculate:
37 × 18 = ?
Advertisements
उत्तर
Guess = 37 × 18 means 40 x 20 = about 800
Calculation-
| 30 | 7 | |
| 10 | 30 × 10 | 7 × 10 |
| 300 | 70 | |
| 8 | 30 × 8 | 7 × 8 |
| 240 | 56 |
By adding the digits in third and fifth rows you will get
300 + 70 + 240 + 56 = 666
Hence, 37 × 18 = 666.
APPEARS IN
संबंधित प्रश्न
What is the most difficult thing in your Maths book?
Hariya and Babu want to buy a handcart for Rs 300.
 |
 |
Who has to pay back more - Hariya or Babu?
For 10 rickshaws she will get Rs 20 × 10 = Rs 200.
So, for 9 rickshaws, she will get Rs 200 – _____ = ______.
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 12 kg of iron.
| 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?
| 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/- |
Kiran buys 1 kg iron for Rs 12 but sells it for Rs 14. How much does she earn when she sells 32 kg iron?
How much money will Dinu pay for 4 kg brass?
First guess the answer and then calculate:
45 × 24 = ?
First guess the answer and then calculate:
142 × 5 = ?
First guess the answer and then calculate:
2 × 175 = ?
