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

rounding to the nearest tenth and nearest hundredth

Answer 2

Rounding to the nearest tenth and rounding to the nearest one hundredth.

Explanation:

round all up or down then line up and add

12.568= 13

11.426= 11

12.324= 12

11.981= 12

12.601= 13

add the totals then you see

60.83 sames as 61