What
is Subtraction?
Subtraction
is a process that we use to find the result of taking numbers away from each
other, for example: 45 minus 12 equals 33

In mathematics we usually use symbols instead of words though, for subtraction sums you need to know that:
the symbol for minus
is 
and
the symbol for equals is =
so the above sum would change to be: 33 
12 = 45
On paper it is easier to solve these
sums if you write them out in a different way:
45
 12

33
 12

33
Exercise
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