Posted by A on Wednesday, September 16, 2009 at 5:41pm.
Add thirtyeight and nine tenths, five and fiftyeight hundredths, seven, and fifteen
and eight tenths.
A~1662?

math  Ms. Sue, Wednesday, September 16, 2009 at 5:50pm
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?

math  Simon, Wednesday, September 16, 2009 at 5:50pm
38.9 + 5.58 + 7 + 15.8
Significant digits will round to the whole number due to the 7.

math  just a girl, Wednesday, September 16, 2009 at 5:51pm
67.28

math  A, Wednesday, September 16, 2009 at 5:51pm
67.28?

math  Ms. Sue, Wednesday, September 16, 2009 at 6:03pm
Right. 67.28 is correct.

math  drwls, Wednesday, September 16, 2009 at 6:03pm
Yes, 67.28. I would not do any rounding off (to 67) unless told to.
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