Round to the nearest ten
4,589

4,590

Step-by-step explanation:

5 or more raise the score, 4 or less let it rest

          ^round up^                 ^stay the same^

4,590

Step-by-step explanation:

When rounding to the nearest ten, like we did with 4589 above, we use the following rules:

A) We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.

B) We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.

C) If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

So the answer is 4,590