Question

Question #a537e

Answer 1

`8.43, 0.01, 15.24, 39.92`

Explanation:

We need to round each number off to two decimal places.

When the digit of the last decimal place of a number is `5` or greater, we round one place up.

If the digit is less than `5`, we should round down.

`Rightarrow 8.432 approx 8.43`

`Rightarrow 0.005 approx 0.01`

`Rightarrow 15.243 approx 15.24`

`Rightarrow 39.918 approx 39.92`

Answer 2

8.43, 0.01, 15.24, 39.92

Explanation:

Rounding is a way of simplifying numbers. To round to a given place value, the next digit in the number is checked; if that number is four or less, the number "rounds down," or stays as is. If the number is five or above, the number "rounds up"; that is, the place value of interest increases by one.

Rounding the decimals to two decimal places means checking the digit that is three places after the decimal.

In the first example, 8.432, the digit 2 is 4 or less, and therefore the number of interest (i.e. two decimal places) rounds down and stays as 8.43.

In the second situation, 0.005, the digit 5 is five or above, and therefore the number of interest rounds up. Thus, 0.01.

In the third given situation, 15.243, the third digit is 3, and therefore rounds down. The result, then, is 15.24.

Finally, the "8" in 39.918 rounds up, resulting in 39.92.