There are 12 arithmetic practice programs in the series. Beginner of Arithmetic (do 25 of each and get 100 to earn a BA Diploma. But start modestly by doing 5 and work you way to 25.) addba, subba, mulba, divba (Whole numbers 0->9. No division by zero.) Master of Arithmetic (MA Diplome) addma, subma, mulma, divba (All integers -9->9). Doctor of Arithmetic (PHA Diploma) addpha, subpha, mulpha, divpha (All integers -12->12)
