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Question
First guess the answer and then calculate:
2 × 175 = ?
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Solution
This number will be near to 2 × 175 = 350
On calculation:
| 100 | 70 | 5 | |
| 2 | 100 × 2 | 70 × 2 | 5 × 2 |
| 200 | 140 | 10 |
By adding numbers in the last row you will get
200 + 140 + 10 = 350.
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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/- |
How much will Kiran pay for 42 kg newspaper?
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45 × 24 = ?
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142 × 5 = ?
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382 × 3 = ?
First guess the answer and then calculate:
4 × 206 = ?
Kiran paid Rs. 919 to the junk collectors. When she sold the junk she got these notes and coins from Dinu.

Now you make a record in her diary.
Find out how much she earned this time.

