Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen

Question

and eight tenths.

A~1662?

Answer 1

That doesn't look right.

38.9 + 5.58 + 7.0 + 15.8

Guestimating -- the answer should be in the 60s.

What answer do you get?

Answer 2

38.9 + 5.58 + 7 + 15.8
Significant digits will round to the whole number due to the 7.

Answer 3

67.28

Answer 4

67.28?

Answer 5

Right. 67.28 is correct.

Answer 6

Yes, 67.28. I would not do any rounding off (to 67) unless told to.