Adding/subtracting decimals

$13.72+$28.49=

12.58-7.29=

Gina competed in a gymnastics competition. Her total score for the balance beam and the vault was 16.75. She scored 9.3 on the vault. How much did she score for the balance beam?

Estimate to the nearest whole dollar by rounding:

$43.82 + $7.14 =

Ellie buys some craft supplies. The supplies cost a total of $6.43. She pays with a $20 bill. How much change does she receive?