Question

Find each sum or difference. round to the place value of the less precise measurement.

2.13 m + 8.6 m

Answer 1

10.7 m… 8.6 is the less precise measurement so you have to stop at the 10th place

Answer 2

10.7

Explanation:

First, we add 2.13 and 8.6 since they are both being multiplied by m...

2.13+8.6=10.73

Now we round it to one decimal place since the less precise measurement is 8.6 (since it has the least number of decimal places)

To round, we look at the number behind the place we need to round to. If the number is between 1 and 4, round down. If it is between 5 and 9, round up.

10.73 (number behind the place is 3; between 1 and 4; round down) -> 10.7