To find the best estimate of 21% of 80, you can use rounding.
21% is a little more than 20%, which is 1/5. So, you can estimate that 21% is about 1/5 of 80.
1/5 of 80 is 16.
Therefore, the best estimate of 21% of 80 is 16.
What is the best estimate of 21% of 80?
1 answer