- Determine the two consecutive multiples of 1,000 that bracket 37,521
- 37,521 is between 37,000 and 38,000
- 37,500 is the midpoint between 37,000 and 38,000
- As illustrated on the number line, 37,521 is greater than the midpoint (37,500)
- Therefore, 37,521 rounded to the nearest thousand = 38,000
