123 math in a primary school app for iPhone and iPad

A Complete K-12 math curriculum, from counting to calculus.takes the child through addition, subtraction, multiplication, division, and so upward until calculus,This is part of the first part.
As you can see, this set of Arithmetic APP is organized in an orderly manner around the discipline of arithmetic itself.

This application includes:

Addition of two numbers is within 5

Minuend is not more than 5

Addition and subtraction within 5

Addition of two numbers is within 10

Minuend is not more than 10

Addition and subtraction within 10

Answer the right answer, within 10

Non - carry addition within 20

Non abdication subtraction within 20

And equal to 10

Carry addition within 20

Carry subtraction within 20

Addition of two numbers is within 20

Minuend is not more than 20

Addition and subtraction within 20

Answer the right answer, within 20

Ten integers and single digit addition

Comprehensive exercises(1)

Ten integers and single digit subtraction

Ten integers and Ten integers addition

Ten integers and Ten integers subtraction

Two digit and single digit addition

Two digit and Ten integers addition

Two digit and single digit subtraction

Two digit and Ten integers subtraction

Comprehensive exercises(2)

Answer the right answer, within 100

Addition of three numbers within 10

Subtraction of three numbers within 10

Addition or Subtraction of three numbers within 10

Addition or Subtraction of two numbers within 10

Addition of three numbers within 20

Subtraction of three numbers within 20

Addition or Subtraction of three numbers within 20

Addition or Subtraction of three numbers within 20