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

its D

Explanation:

rounding to the nearest tenth and rounding to the nearest hundredth

Answer 2

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

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.