Line up your place values, largest number on top! (Draw a place value chart to help you solve)
Rounding Rules:
Round down if your number is a 4, 3, 2, 1, or 0
Round up if your number is a 5, 6, 7, 8, or 9
485,229
+ 37,835
620,310
- 75,631
Round 2,490 to the nearest hundreds place