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Question
First guess the answer and then calculate:
4 × 206 = ?
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Solution
This number will be near to 5 × 200 = 1000
| 200 | 6 | |
| 4 | 200 × 4 | 6 × 4 |
| 800 | 24 |
By adding the numbers in the last row you will get
800 + 24 = 824
So, 4 × 206 = 824.
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