3rd Grade Worksheets - Math Fact Cafe Count by 3 from 6 to 15. Count by 3 from 6 to 30. Count by 4 from 8 to 20. Count by 4 from 8 to 40. Count by 2 and 4, from 4 to 20. Count by 5 from 10 to 25. Count by 5 from 10 to 50. Count by 6 from 12 to 30. Count by 6 from 12 to 60.