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

  -  Converting between Percent's and Fractions and Decimals

  -  Estimating and solving Percent problems

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 beta-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 - Monthly Subscription

Price Options
One-time purchase
PreAlg Skill Builder
Single | Monthly
$9.99monthly/ auto-renew
Yearly Subscription
$8.33yearly/ auto-renew