Writing it down
When writing down sums, separate the numbers into units, tens, hundreds and thousands. List the numbers in a column and always start adding with the units first.
So when adding together 7948 + 1223, you should write it down like this:
Some tips for addition
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 in addition 394 + 88 is the same as 88 + 394.
Key words - look out for these words in problems: total, sum, altogether, more. They all indicate an addition calculation.
Write down your sums if the numbers are too high or too difficult to add in your head.
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