Respuesta :

Answer:

(4) 644,000

Step-by-step explanation:

643,581

The 3 is in the thousands place

We look at the hundreds place

5

It is 5 or greater so we round the thousands place up 1

644000

Answer:

(2) 643,000

Step-by-step explanation:

Since 3 is a lesser number than 5 the number would be rounded to 643,000