### Addition and Subtraction - Belswains Primary School

```Year 4 domain plan
Mental fluency
Pupils should be taught to:
including; a three digit number and
ones, a three digit number and
tens; a three digit number and
hundreds (Year 3)
Rehearse methods identified on the
school calculation policy for Year 4
find 1000 more or less than a given
number
Written fluency
Pupils should be taught to:
add and subtract numbers with up
to 4 digits using the formal written
subtraction where appropriate
As identified by the school’s calculation
policy
Estimate, use inverse and check
Pupils should be taught to:
estimate and use inverse
operations to check answers to a
calculation
Solve problems
Pupils should be taught to:
subtraction two-step
problems in contexts,
deciding which
operations and
methods to use and
why
Statements
1
Term
2
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3
Rehearse mental methods identified by calculation policy
add and subtract numbers mentally including; a three digit number and
ones, a three digit number and tens; a three digit number and hundreds
(Year 3 – 3C1)
round any number to the nearest 10, 100 or 1000 (number and place
value – 4N4b)
add and subtract numbers with up to 4 digits using the formal written
methods of columnar addition and subtraction where appropriate 4C2
estimate and use inverse operations to check answers to a calculation
4C3
solve addition and subtraction two-step problems in contexts, deciding
which operations and methods to use and why 4C4
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Notes and guidance (non-statutory)
Pupils continue to practise both mental methods and columnar addition and subtraction with increasingly large
numbers to aid fluency (see Mathematics Appendix 1).