Your notebook

0 of 60 rules

Each lesson adds the rules it teaches. Print it and you have a revision sheet made only of things you've actually worked through.

Empty — for now.

Finish a lesson and its rules land here.

Start the first lesson

Adding & subtracting

Levelling: give and take

Unlocks in Lesson 1: Make it round →

Adding & subtracting

Constant difference: shift both

Unlocks in Lesson 1: Make it round →

Adding & subtracting

Line up the decimal points

Unlocks in Lesson 2: Line up the points →

Adding & subtracting

Estimate to check

Unlocks in Lesson 2: Line up the points →