Place value table
  - Find place values
  - Find decimals
  - Place values - variable
  - Recognize place values
Convert texts into numbers
  - Exercise -Level 1-
  - Exercise -Level 2-
  - Exercise - professional
Deepen order
  - Exercise -Level 2-
  - Exercise - professional
  - Exercise - top professional

  - Explanation with practice
  - Halves, quarters and eighths
  - Fifths, eighths to decimals
  - Arrange decimal fractions
  - Fraction to decimal
  - Decimal to fraction
  - Larger or smaller?
  - For professionals only
Memory games - part 1
  - memory - tenths
  - memory - fifths&tenths
  - memory - eighths
  - memory - fifths&quarters
  - memory - eighths&fifths
  - tricky memory

Memory games
  - memory - thirds&ninths
  - memory - ninths&tenths
  - memory - ninths&fifths
  - tricky memory

Order of decimal numbers
  - Order decimals -1-
  - Order decimals -2-
  - Evaluate diagrams
Estimating and combining
  - Arrangement Exercise 1
  - Arrangement Exercise 2
  - Between two decimals
Read off the number line
  - Recognize tenths
  - Recognize hundredths
  - Combined exercise
Draw on number line
  - Arrange tenths
  - hundredths
  - Combined exercise
read off the number line - difficult
  - Read off Profi
  - Read off TopProfi
raw on number line - difficult
  - Arrange Profi
  - Arrange TopProfi

  - ... on level 1
  - ... on level 2
  - ... for professionals

To natural number
  - ... complete -level 1-
  - ... complete -level 2-
  - ... complete -profi-
First exercises
  - Add two decimals -1-
  - Add two decimals -2-
  - Add three decimals -1-
  - Add three decimals -2-
Various exercises
  - What is the value of x?
  - same number of decimal places
  - different number of decimal places
Addition stars
  - Addition star -level 1-
  - Addition star -level 2-
  - Addition star -level 3-
Wall of numbers
  - number wall -level 1-
  - number wall -level 2-
  - number wall -level 3-
  - number wall -level 4-
  - number wall -profi 1-
  - number wall -profi 2-
  - number wall -topprofi-
Number pyramid
  - complete pyramid
Number tables
  - table -level 1-
  - table -level 2-
  - table for professionals-

First exercises
  - Subtract two decimals -1-
  - Subtract two decimals -2-
Further exercises
  - Subtract decimals -1-
  - Subtract decimals -2-
What is the value of x?
  - subtract -professional 1-
  - subtract -professional 2-
  - subtract -professional 3-
  - subtract -top professional
Wall of numbers
  - number wall -level 1-
  - number wall -level 2-
  - number wall -level 3-
  - number wall -level 4-
  - number wall -profi-
  - number wall -top profi-
Number tables
  - complete table -1-
  - complete table -2-

Diagrams
  - Evaluate diagrams
  - Evaluate diagrams -profi-
  - Evaluate diagrams -top profi-
calculation chain
  - Complete the chain -1-
  - Complete the chain -2-
  - Complete the chain -profi-
Table tasks
  - Table values -level 1-
  - Table values -profi-
  - Calculation rule 1
  - Calculation rule 2
  - Are you the best?
Secret signs
  - Decode characters -1-
  - Decode characters -profi-
Calculation trees
  - calculation tree -level 1-
  - calculation tree -profi 1-
  - calculation tree -profi 2-
  - calculation tree -profi 3-
  - calculation tree -top profi-
Magic squares
  - Adding square -1-
  - Adding square expert
Arithmetic house
  - Arithmetic house -level 1-
  - Arithmetic house -level 2-
  - Arithmetic house -level 3-
  - Arithmetic house -professional-
With parentheses
  - one parenthesis
Fraction and decimal
  - Add -Level 1-
  - Add -Profi-
  - Subtract -Level 1-
  - Subtract -Profi-
  - Add & subtract -expert-

Multiply ...
  - with 10; 100; 1000; ...
  - with 0.1 ; 0.01 ; 0.001; ...
  - for professionals
Text problems - multiply ...
  - with 10; 100; 1000; ...
  - with 0.1 ; 0.01 ; 0.001; ...
  - for professionals
Set decimal point
  - set decimal point correctly
Multiply two numbers
  - ... in your head -level 1-
  - ... in your head -level 2-
  - ... in your head -profi-
  - ... in your head -top profi-
Number walls
  - number wall - level 1
  - number wall - level 2
  - number wall - profi
  - number wall - top profi

Divide ...
  - by 10; 100; 1000; ...
  - by 0.1 ; 0.01 ; 0.001 ; ...
  - for professionals
Text problems - divide ...
  - by 10; 100; 1000; ...
  - by 0.1 ; 0.01 ; 0.001 ; ...
  - for professionals
Tables
  - Zwei Werte ermitteln
Divide cleverly
  - ... on level 1
  - ... for professionals 1
  - ... for professionals 2
  - ... for top experts

Convert texts into terms
  - variable problem -1-
  - variable problem -2-
  - for professionals
Word problems
  - Bottling wine -1-
  - Bottling wine -2-
  - Bottling wine -3-
Word problems - part 2
  - Bike tour -type 1-
  - Bike tour -type 2-
  - Bike tour -type 3-
  - Bike tour -expert-