Read numbers
  - Exercise -level 1-
  - Exercise -level 2-
  - Exercise -profi-
  - Exercise -expert-
  - Exercise -expert 2-
  - Exercise -expert 3-
  - Exercise -champion-
Arrange numbers
  - Exercise -level 1-
  - Exercise -level 2-
  - Exercise -profi-
  - Exercise -expert-
  - Exercise -expert 2-
  - Exercise -expert 3-
  - Exercise -champion-
Numbers in fraction form
  - Arrange eighths
  - Read numbers
  - Arrange numbers
  - Read & Arrange

Numbers in the middle
  - Exercise -level 1-
  - Exercise -level 1-
Comparison of sizes
  - ... in fraction form
  - ... Decimal and fraction
Order numbers
  - ... in fraction form

To the whole number
  - ... complete -level 1-
  - ... complete -level 2-
  - ... complete -expert-
Table problems
  - Complete tables -level 1-
  - Complete tables -profi-
  - Calculation rule-
  - Calculation rule 2-
  - Are you the best?
Number walls -decimal-
  - number wall -level 1-
  - number wall -level 2-
  - number wall -level 3-
  - number wall -level 4-
  - number wall -profi 1-
  - number wall -profi 2-
  - are you an expert?
Number pyramids -fraction-
  - Pyramid -level 1-
  - Pyramid -profi-
  - Pyramid -top level-
  - Pyramid -champion-
Arithmetic trees
  - Arithmetic tree -level 1-
  - Arithmetic tree -profi 1-
  - Arithmetic tree -profi 2-
  - Arithmetic tree -profi 3-
  - Arithmetic tree -top expert-
Problems with absolute value
  - Calculate with ... -1-
  - Calculate with ... -2-
  - Mixed tasks -1-
  - Mixed tasks -2-
Calculating - illustrative
  - two numbers
  - three numbers
  - three numbers -2-
Arithmetic house
  - Arithmetic house -level 1-
  - Arithmetic house -level 2-
  - Arithmetic house -level 3-
  - Arithmetic house -professional-
Fraction and decimalform
  - two numbers -1-
  - two numbers -2-
  - two numbers -expert-
With calculation strategy
  - Strategy -level 1-
  - Strategy -level 2-
  - Strategy -level 3-
  - Strategy -expert-
  - Strategy -expert 2-
  - Strategy -top expert-
Problems with brackets
  - ... one round bracket
  - ... two round bracket
  - ... round and square

With powers of ten
  - ±10, ±100, ±1000
  - ±0.1 ; ±0.01 ; ±0.001
  - profi version
Powers of ten - in text form
  - ±10, ±100, ±1000
  - ±0.1 ; ±0.01 ; ±0.001
  - profi version
With decimals
  - ... in your head -level 1-
  - ... in your head -level 2-
  - ... in your head -profi-
  - ... in your head -expert-
With fractions
  - Two fractions -Level 1-
  - Two fractions -Level 2-
  - Two fractions -Level 3-
  - Two fractions -Profi-
  - Fraction times number
Number pyramids - fraction
  - Pyramid -level 1-
  - Pyramid -level 2-
  - Pyramid -expert-
With tables
  - ... skillfully fill -1-
  - ... skillfully fill -expert-

By powers of ten
  - by ±10, ±100, ±1000
  - by ±0,1 ; ±0,01 ; ±0,001
  - Expert version
By powers of ten - text form
  - by ±10, ±100, ±1000
  - by ±0,1 ; ±0,01 ; ±0,001
  - Expert version
Tables
  - Determine two values
Fraction form
  - Two fractions -level 0-
  - Two fractions -level 1-
  - Two fractions -level 2-
  - Two fractions -expert-

Adding and multiplying
  - Problem type -1-
  - Problem type -2-
  - Problem type -mixed-
Adding and dividing
  - Problem type -1-
  - Problem type -2-
  - Problem type -mixed-
Connect operations
  - for professionals only
Arithmetic trees
  -Arithmetic tree -1-
  - Arithmetic tree -2-
  - Arithmetic tree -expert-

Connect operations
  - Number-times-bracket
  - Calculation rules -1-
  - Calculation rules -2-
  - Calculation rules -expert-
  - Calculation rules -champ-

Coordinate system
  - Enter points -level 1-
  - Enter points -level 2-
  - Read points -level 1-
  - Read points -level 2-
Calculate term values
  - ... with three terms
  - ... with three terms -2-
Calculate with temperatures
  - Average temperature
  - One value is missing
Apply arithmetic laws
  - Distributive law for experts