Level 2
The actual masses of two wooden crates, Y and Z, are measured in hundredths. The mass of Crate Y is rounded off to 13.6 kg and the mass of Crate Z is rounded off to 16.8 kg. What is the greatest possible difference in the actual masses of these two crates? Give the answer in kg.
Level 2
Alice has 2 fifty-cent coin, 3 twenty-cent coins and 3 five-cent coins in her piggy bank. How much money does she have altogether? Express your answer in dollars.