Changes

If, however, your score is less than 60%, you will see the following screen, and a sample problem will be shown. You can see as many sample problems as you want before a new set of practice exercises is given.

[[File:Add&Sub3 Do Better.png|300px|thumb|center|Addition and Subtraction 3 Retry Activity]]

If your score is between 60% and 80% the computer will continue giving problems until your score falls below 60% or goes above 80%.