Question

Oni was timing her 100 meter sprints. Her first five sprints were 12.568 seconds, 11.426 seconds, 12.324 seconds, 11.981 seconds, and 12.601 seconds. Which two estimation techniques will give the same result for the total number of seconds for all five sprints?

Answer 1

Answer:

We can round off the digits to get a better estimate here.

Step-by-step explanation:

Oni's first five sprints were 12.568 seconds, 11.426 seconds, 12.324 seconds, 11.981 seconds, and 12.601 seconds.

The techniques that will give the same result for the total number of seconds for all five sprints are rounding off the digits to either nearest tenth or to nearest hundredth.

Nearest tenth :

$12.6+11.4+12.3+12+12.6 = 60.9$

Nearest hundredth :

$12.57+11.43+12.32+11.98+12.60=60.9$

We can see both times the estimate is same.

Answer 2

If by estimation techniques, you mean estimating to a certain number interval (e.g. to the nearest tenth, to the nearest whole number, etc.), then it would be to the nearest intervals of five and ten, in which they would all round down to approximately 10 seconds.