For the first one: What you would do is Add each item separately. $3.20 for the sandwich *plus* $0.88 for the chips *plus* $0.99 for the drink. $5.07 would be the price for everything separate. So which would be the better deal for Anthony?
For the second one: you are looking for which number is farther away from 5 You always have to look at 0 first (try drawing your own number line first) Your answer would be -5.14 because 5 to 11 is closer than 5 to -5.14