Please explain what I have to do as well as answer the question, if the method works and the answer is correct, I'll give brainiest! (Whoever is first)

Answer:
0.53
Step-by-step explanation:
0.533
Decimal places go 10ths, 100ths, 1000ths, and so on. The nearest hundred therefore, is the first 3. Looking at the next digit, which is 3, because it's less than 4, we know we have to round down, which makes the answer 0.53