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What is the rounded-off value of 42 to the nearest tens?

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Detailed Solution

The given number is 42.

To round off a number to the nearest tens, we have to check the digit at ones place.

If the ones digit is less than 5 then the ones digit becomes zero and the tens digit remains the same.
If the ones digit is more than or equal to 5 then the ones digit becomes zero and the tens digit increase by 1.

Tens	Ones
4	2

In 42, the digit at ones place is 2 which is less than 5,

So, we replace the ones digit with 0 and the tens digit remains the same.

Therefore 42 will be rounded off to 40.

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