
Multiples of 2: all numbers ending with 0, 2, 4, 6, or 8.
Multiples of 4: The alternate rows
Multiples of 5: all numbers ending with 0 or 5.
Multiples of 3, 6, and 7: The diagonal pattern
2. Identifying the pattern of the hundreds chart

3. Rounding off the nearest tens
Reference: http://allthingsupperelementary.blogspot.sg/2014/03/5-ways-to-use-hundreds-chart-in-upper.html