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Bootcamp step 4
Written methods
No calculator allowed in the assessment, but pen and paper are. Practise the column and bus-stop methods on the screen the same way you would write them on paper, then mix all four methods in Kodi's homework set or a fresh set of similar questions.
Goal
Start with Column Addition, then move into Column Subtraction. Long multiplication and short division are the next builds; finish with the mixed homework set.
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Suggested next: Start with Column Addition
It's the simplest column method. Once it feels natural, subtraction uses the same right-to-left input pattern.