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When writing down sums, separate the numbers into ones, tens, hundreds and thousands.

List the numbers in a column and always start adding with the ones first.

• Estimate first and check afterwards - it's a good idea to estimate a rough answer first and then check your actual answer.
• Order doesn't matter - remember that 345 + 129 is the same as 129 + 345.
• Key words - look out for these words in problems: total, sum, altogether, more. They all indicate an addition calculation.

Are you looking for more resources on column addition? This animated short film is from the 91�ȱ� Teach series, Hypatia's Mathematical Maze, and introduces the concept of adding and subtracting using written methods.

91�ȱ� Teach has thousands of free, curriculum-linked resources to help deliver lessons - all arranged by subject and age group.