Decimal Addition and Subtraction

On a farm, the farmer harvested 30.7 crates of apples and 27.9 crates of oranges. How much more crates of apples are harvested?

The birch tree outside the farm is 3.5 meters tall. The pine tree is 5.4 meters tall. The maple tree is 1.1 meter taller than the birch tree. Which is taller, the maple tree or the pine tree?

The tallest building in the city is 456.4 meters tall. The second tallest building in the city is 431.6 meters tall. How much taller is the tallest building?

A bridge is 239.4 meters long. Because of a traffic jam, Ken’s car stops after he drives 102.3 meters on the bridge. How much more does he need to drive to get off the bridge?

The bus is 33.5 feet long. The city train is 45.9 feet longer than the bus. How long is the city train?

Part of one side of the road is closed for construction. The part that is closed is 2.8 meters wide, allowing only 3.1 meters for the cars to drive by. How wide is the road before it is closed?

Kate had $ 368.29. Her mother gave her $ 253.46 and her sister gave her $ 57.39. How much money does she has now?

Maria had $ 469.38. She gave $ 99.37 to Mike and $ 124.93 to Kerry. How much money is left with her?

The sum of three decimals is 496.28. Two decimals are 238.94 and 110.09. Find the third decimal.