Maths
Above are the Learn-It facts for each of the different steps.
Each of these number facts need to be learnt so well that they can be recalled instantly.
Learn-Its are both addition and multiplication facts.
By learning these facts instantly it will save you from counting again and again and will help you to be more efficient with higher order numeracy work.
Try practicing these every single day, several times a day.
Start with the lowest step that you do not already know.