BiDMAS

sample Q from each layer	teach-learn questions
layer	1	2	3	4	5	6
practise-learn worksheets
print hints	d/s 2 per page	d/s 2 per page		d/s 2 per page		d/s 1 per page

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NC information

National curriculum code and descriptions (partially) covered by the layers.

N3 use conventional notation for priority of operations, including brackets, powers, roots and reciprocals.

N6 use positive integer powers and associated real roots (square, cube and higher), recognise powers of 2, 3, 4, 5 estimate powers and roots of any given positive number

N7 calculate with roots, and with integer indices