- Determine the two consecutive multiples of 10 that bracket 21
- 21 is between 20 and 30
- 25 is the midpoint between 20 and 30
- As illustrated on the number line, 21 is less than the midpoint (25)
- Therefore, 21 rounded to the nearest ten = 20
21 rounded to the nearest ten with a number line
The solution above and other related solutions were provided by the Round to the Nearest Ten with a Number Line Application.
Curated Videos
Rounding to the Nearest TenRounding to the nearest 10 | 3rd grade | Khan AcademyRounding on a Numberline