Year 3


Now try-



How to add numbers together

To add numbers together you can use a variety of written methods such as the column method, or a number line; or you could use a mental arithmetic method.

Resources for physically adding numbers together could include: an abacus, a 100 square, Cuisinaire rods, Numicon, Base 10 or simply use cubes or counters.

 Try using more than one method and practice checking your answers with a calculator.


Government guidelines (Year 3)

      Pupils should be taught to:

  • add and subtract numbers mentally, including

    • a three-digit number and ones

    • a three-digit number and tens

    • a three-digit number and hundreds

  • add and subtract numbers with up to three digits, using formal written methods of columnar addition and subtraction

  • estimate the answer to a calculation and use inverse operations to check answers

  • solve problems, including missing number problems, using number facts, place value and more complex addition and subtraction


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Addition worksheets - Year 3 Primary maths resources, activities and worksheets

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Add these numbers together in your head
or use a written method to solve them