Add and subtract Decimals word problems

If Ali put 5.67 cups of sugar and another 1.4 cups of sugar in a recipe ,how much total sugar did she use?

Anne had a total of $128.00. She spent $56.12 and $34.97. How much money does she have left?

Jim walked 3.45 km in 2 days.The 1st day he walked 1.45 km. How far did he walk the 2nd day?

Henry bought a can of coffee for $2.99 and 2 boxes of cereal for 0.80 each. How much did he spend?

Brian is 56.6 cm tall and Jack is 30.6 cm tall. How much taller is Brian than Jack?