find the unit price and decide which is better buy. Round to three dec places

$7.81 for 14 oz
%5.50 for 10 oz

for 14 oz i got $0.56
and for 10 oz i got $0.55

how do u round to 3 dec places?

1 answer

The unit prices, to three decimal places, are 0.558 and 0.550. ($/oz)

I used a hand calculagtor and rounded off the first one.