Estimate the sum (489 + 251) correct to nearest hundred.

600

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700

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800

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900

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Solution

The correct option is C 800
Consider the number 489.

Since the digit at tens place is 8 > 5, 489 rounded off to the nearest hundred will be equal to 500.

Consider the number 251.

Since the digit at tens place is 5, 251 rounded off to the nearest hundred will be equal to 300.

Now, 300 + 500 = 800, therefore estimated sum of (489 + 251) to the nearest hundred is 800.

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