Question

Round off to the nearest $10$, what numbers could be estimated as $60$.

Answer 1

Estimating to nearest $10$:

To round off to the nearest $10$, look at the digit in the units column. If it is less than $5$, round down. If it is more than or equal to $5$, round up.

So, $55,56,57,58,59$ having the unit digit greater than or equal to $5$ are rounded up to $60$ and $60,61,62,63,64$ having unit digit less than $5$ are rounded down to $60$.

Thus, numbers that could be estimated as $60$ are $55,56,57,58,59,60,61,62,63,64$.