Question

Estimate 16.26+4.169 by first rounding each number to the nearest tenth.

Answer 1

16.26
+ 4.269
_______
20.529
—
=20.5
or you can do
16.26=16.3 when round
4.169=4.2 when rounded
add the new rounded numbers
16.3+4.2=20.5

key note: when rounding if the number is 5 or greater than 5 you add one the the numbers place you are rounding to.

Answer 2

16.3 + 4.2 = 20.5 (20.5 has not been rounded)

Explanation:

I just rounded both numbers to the nearest tenth, it should be accurate. I hope I helped :)