Fast addition

The four techniques that make addition instant.

Left to right
Friends of 10
Make it 100
Round and compensate
Boss: total additionPhase boss

Fearless subtraction

Finish the previous phase to unlock

Count up
Subtract the round one
Subtract in parts
Boss: total subtractionPhase boss

Multiplication

Finish the previous phase to unlock

Fluent tables
By 5, 25 and 50
The 11 trick
Split it
Boss: multiplicationPhase boss

Expert add & subtract

Finish the previous phase to unlock

Left to right II
Make it 100 II
Round and compensate II
Count up II
Subtract in parts II
Boss: add & subtractPhase boss

Division

Finish the previous phase to unlock

Divide with tables
Successive halving
By 5 and 25
Boss: divisionPhase boss

Percentages

Finish the previous phase to unlock

10% opens everything
Halves and quarters
Build percentages
The mirror
Boss: percentagesPhase boss

Multiply & divide big

Finish the previous phase to unlock

Fluent tables II
The 11 trick II
Split it II
Successive halving II
By 5 and 25 II
Boss: multiply & dividePhase boss

Fractions

Finish the previous phase to unlock

Fraction of a number
Fraction to %
Boss: fractionsPhase boss

Final exam

Finish the previous phase to unlock

Mixed exam
Final bossPhase boss