- Determine the two consecutive multiples of 10 that bracket 42,099
- 42,099 is between 42,090 and 42,100
- 42,095 is the midpoint between 42,090 and 42,100
- As illustrated on the number line, 42,099 is greater than the midpoint (42,095)
- Therefore, 42,099 rounded to the nearest ten = 42,100
