Question

66.21 was rounded to 2dp. what is the lower bound?

Answer 1

the answer is 66.205

Explanation:

basically you look at the place value so

66.21 is basically the same as 66.210 then you look at the lowest number that can round UP to 66.210 which would be out of 1 to 9 would be 5 so the smallest number that can round up to 66.210 is 66.205 hope this helped :D