Round 56.5598571145 to the nearest thousandth.

56.560

Step-by-step explanation:

56.5598571145

The thousandth digit is the 9 in bold above.

Drop the digits to the right of the thousandths place.

56.559

Look at the first digit to the right of the thousandths place.

56.5598571145

It's an 8. Since 8 is greater than 4, the thousandths digit goes up by 1.

56.559 becomes 56.560

Answer: 56.560