What numbers do we need to round to the nearest 100?
100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200
0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70