A1- Calculations on integers - Additions 

Example:  $30+23+40+87$

A2 - Calculations on integers -  Multiplications 

Example:  $2\times 16\times 38\times 2$

A3 - Calculations on integers - Additions and Multiplications

Examples:  $26+64+34+46$  , $23\times 3\times 18$

A4 - Calculations on integers - Divisions

Examples  $88:8$ ,  $36:20$

A5 - Calculations on integers - Additions and Multiplications with parentheses

Example $5\left(12+4\right)$

A6 - Calculations on integers - Additions and Multiplications without parentheses

Example:  $-6+2+7+2-4$

A7 - A5 - Calculations on integers - Additions and Multiplications with parentheses

Example:  $\left(12-5\right)-\left(-1+5\right)$

A8 - Calculations on integers - Multiplications

Example:  $2\left(-3\right)\left(-6\right)\times 3$   

A9 - Calculations on integers - Additions, Subtractions, Multiplications