Year 4 · Key Stage 2 · Number - addition and subtraction
estimate and use inverse operations to check answers to a calculation
Statutory requirement
Pupils should be taught to estimate and use inverse operations to check answers to a calculation
Source: Department for Education, National curriculum in England: mathematics programmes of study. Crown copyright information reproduced under the Open Government Licence v3.0.
ChalkBee reference:
uk-ks2-y4-ma-nas-02. The DfE does not assign an official alphanumeric code to this statement.Relevant Year 4 worksheets
These resources support parts of the requirement. They are not presented as a complete assessment of every clause.
Grade 3 Addition Worksheet (Set A)
Grade 3 · printable with answer key
Grade 3 Addition Worksheet (Set B)
Grade 3 · printable with answer key
Grade 3 Addition Worksheet (Set C)
Grade 3 · printable with answer key
Grade 3 Addition Worksheet (Set D)
Grade 3 · printable with answer key
Grade 3 Addition Worksheet (Set E)
Grade 3 · printable with answer key
Grade 3 Addition Worksheet (Set F)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set A)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set B)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set C)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set D)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set E)
Grade 3 · printable with answer key
Grade 3 Subtraction Worksheet (Set F)
Grade 3 · printable with answer key
Related teaching units
These existing units provide relevant lesson material. A dedicated UK-labelled unit may still be needed where the requirement is broader.