1. There are 16 ounces in a pound. So you need to divide 48 by 16 to get the number of pounds of chocolate (YUM!) to buy. I get 3 pounds (extra yum!!!).
2.There are 1,000 millilitres in a litre, so 1 millilitre is one thousandth of a litre. The answer is litre.
3. You question is a bit blurry, but I think it says, " (65 divided by 5 ) -4".
In this case, the answer is: divide 65 by 5, then subtract 4.
