Raj had Rs.1398 in his wallet. He left Rs.526 outside the movie counter. Estimate how much money is left with him to the nearest 100. Also, find the actual amount left with him, and the difference between the estimated and actual amount.

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Solution

We need to estimate 1398 - 526.
1398 > 526.

$∴$ We will round off these numbers to the nearest hundreds.

1398 can be rounded off to 1400.
526 can be rounded off to 500.

Estimated difference:
1400 - 500 = 900
The actual amount left with him = 1398 - 526 = 872
The difference between the estimated amount left with him, and the actual amount left with him = 900 - 872 = 28.

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