No, you do not have to line up the decimals.
It's 0.28 because 7 is greater than 4 so you round the number before that up by 1
None of those show another way to 64
6*6*6*6=1296
4*4*4*4*4*4=4096
6+6+6+6=24
6*4=24
Another way to show 64 is 8*8 or 4^3
Answer:
The percent error is -2.1352% of Jocelyn's estimate.
