2.NBT.2
Ask your child to count by ones, starting at 620. They can stop at 720.
Then ask them to start at 0 and skip count by 5s to 200.
Ask them to start at 200 and skip count by 10s to 400.
Then ask them to skip count from 400 by 100s to 1,000.
Then ask them to start at 0 and skip count by 5s to 200.
Ask them to start at 200 and skip count by 10s to 400.
Then ask them to skip count from 400 by 100s to 1,000.