Round the following decimal to 2 decimal places

1.821 ≈

When rounding the decimals to the nearest hundredths place, to decide whether to round up or down, look at the number to the right of the hundredths place.

If the number is 5 or greater, round the hundredths place up and drop the digits after the hundredths place;

If the number is less than 5, keep the same hundredths place and drop the digits after the hundredths place.

Look at the number to the right of the hundredths place

1 is less than 5

So 1.821 ≈ 1.82