Estimate the sum of 97 and 46 to the nearest ten.

143

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145

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150

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160

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Solution

The correct option is C 150
On rounding off 97 to its nearest ten we get 100 as ones digit 7 is greater than 5.

Similarly, on rounding off 46 to its nearest ten we get 50 as ones digit 6 is greater than 5.

So, the estimated sum is 100 + 50 = 150.

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