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Round these numbers to the nearest tens.
$28,32,52,41,39,48,64,59,99,215,1453,2936$

Answer Verified Verified
Hint: Take the digits and use the rule to round the numbers to the tens:
1) If the ones digit is $5$ or more then tens digit is increased by $1$.
2) If the ones digit is $4$ or less the tens digit stays the same.

Complete step-by-step answer:
To estimate means to find something close to the correct answer. In other words, you are approximating. For example, the American statistic for the ideal number of children is $2.5$. Now, nobody can have half a kid. We can estimate this exact statistic to either $2$or $3$ children. We will discuss later under what situations you will estimate up or estimate down. To write an estimate, we use the squiggly equal sign. Estimation can help you in various circumstances both in math and in real life.
When it comes to estimating in math, there is a general rule for you to follow. This general rule tells you to look at the digit to the right of the digit you want to estimate, and if it is less than $5$ then you round down, and if it is greater than $5$, you round up.
So, for example, if you wanted to round to the nearest whole number here, you would look at the digit right after the decimal since that is the digit to the right of the digit you want to round.
A rounded number has about the same value as the number you start with, but it is less exact.
If we want to round these numbers to the nearest whole number, we'll need to look at the digit right after the decimal. Our general rule tells us that if our digit that is to the right of the digit we want to estimate is under $5$, then we round down, and if it's greater, then we round up. Okay, that sounds easy enough.
Rule to round the numbers to the tens:
1) If the ones digit is $5$ or more then tens digit is increased by $1$.
2) If the ones digit is $4$ or less the tens digit stays the same.
So for $28$ the nearest tens is$30$.
$32$ the nearest tens is $30$.
$52$ the nearest tens is $50$.
$41$ the nearest tens is $40$.
$39$ the nearest tens is $40$.
$48$ the nearest tens is $50$.
$64$ the nearest tens is $60$.
$59$ the nearest tens is $60$.
$99$ the nearest tens is $100$.
$215$ the nearest tens is $220$.
$1453$ the nearest tens is $1450$.
$2936$ the nearest tens is $2940$.

Note: Read the question in a careful manner. Here don’t jumble while writing. All the rules are mentioned above. Be thorough with concepts. Your concept regarding rounding up should be cleared.
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