Product Description: The Number DNA™ PreAlgebra Skill Builder software contains nearly 300 refreshable workouts and tests distributed over the following topics:

  • Add/Subtract/Multiply/Divide Whole Numbers

  • Add/Subtract/Multiply/Divide Integers

  • Factors/GCF/LCM and The Number Game

  • Add/Subtract/Multiply/Divide Fractions

  • Add/Subtract/Multiply/Divide Decimals

  • Each subscriber has their own personal home page that keeps track of their progres and includes links to their next workout or test.


Our product is newly developed. The Numerical Reasoning, Fractions and Decimal modules have been Alpha tested by over 500 students in the Flint, Brighton, Ypsilanti and Ann Arbor areas of Michigan. These students have completed over 400,000 problems with an accuracy rate of 90%. We will expand the Decimal Module and make the Percent Module available this Spring 2021. You will have access to all Number DNA™ units, as they are developed, at no extra charge.


Your login information will be sent within 24 hours of receiving payment.

Number DNA PreAlgebra Skill Builder - Family Yearly Subscription

Price Options
Skill Bldr Fam. Year
$159.99yearly/ auto-renew