A chef needs 4 litres and 500 millilitres of milk to bake cakes for a school party. She only has a small measuring cup that measures milk in millilitres (mL).
What is the total amount of milk the chef needs, written completely in millilitres (mL)?

Answer: C. 4500 mL

The easiest way to convert is to remember that 1 Litre = 1,000 mL.
First, change the whole litres into mL:
4 Litres = 4,000 mL.
Next, just add the leftover millilitres: 4,000 mL + 500 mL = 4,500 mL.
So, the chef needs exactly 4,500 mL of milk!

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