Decimals (Mixed arithmetic operations)：練習問題

A container initially holds \( 12.45 \text{ L} \) of water. If \( 3.2 \text{ L} \) of water is poured out and then \( 1.55 \text{ L} \) of water is added, how much water is in the container now?

A box of cherries weighs \( 2.45 \text{ kg} \). Mr. Chan buys 3 boxes. He gives \( 1.8 \text{ kg} \) of cherries to his neighbor and eats \( 0.75 \text{ kg} \). How many kilograms of cherries does he have left?

A water tank contains $$125.2 \text{ liters}$$ of water. Each day, $$12.5 \text{ liters}$$ are used, and $$5.3 \text{ liters}$$ evaporate. If $$20 \text{ liters}$$ of water are added every two days, what is the amount of water in the tank after $$4$$ days?

Which of the following has the same value as \( 4.5 \times 2 + 3.6 \)?

A recipe calls for $$0.75 \text{ kg}$$ of sugar. If you want to make $$3$$ batches of the recipe, and you already have $$0.5 \text{ kg}$$ of sugar, how much more sugar do you need?

Calculate the result of the following expression:
\( 15.6 - 2.4 \times 3 + 1.25 \)

A factory produced \(150.75\) litres of a special cleaning solution. They initially filled \(25\) bottles, each containing \(2.8\) litres. The remaining solution was then mixed with an additional \(51.75\) litres of water to dilute it. After dilution, this new mixture was poured equally into smaller bottles, each holding \(0.5\) litres. If each small bottle is sold for \(12.99\) dollars, how much money can the factory earn from selling all the small bottles?