Subtraction
Subtraction is ...
... taking one number away from another.
Start with 5 apples, then subtract 2, we are left with 3 apples. 

This can be written: 5 − 2 = 3 
Try It Yourself
Train Yourself
You get good at subtraction with practice...
... so use Math Trainer  Subtraction to train yourself!
Subtraction Table
You can also "look up" answers for simple subtraction using this table:
0  1  2  3  4  5  6  7  8  9  10  11  12  

0  0  
1  1  0  
2  2  1  0  
3  3  2  1  0  
4  4  3  2  1  0  
5  5  4  3  2  1  0  
6  6  5  4  3  2  1  0  
7  7  6  5  4  3  2  1  0  
8  8  7  6  5  4  3  2  1  0  
9  9  8  7  6  5  4  3  2  1  0  
10  10  9  8  7  6  5  4  3  2  1  0  
11  11  10  9  8  7  6  5  4  3  2  1  0  
12  12  11  10  9  8  7  6  5  4  3  2  1  0 
Example: Find 8  5
 find the row starting with "8"
 move along till you are under the column "5"
 and there is the number "3", so 8 − 5 = 3
Names
Other names used in subtraction are Minus, Less, Difference, Decrease, Take Away, Deduct.
The names of the numbers in a subtraction fact are:
Minuend − Subtrahend = Difference
Minuend: The number that is to be subtracted from.
Subtrahend: The number that is to be subtracted.
Difference: The result of subtracting one number from another.
Subtracting Larger Numbers
To subtract numbers with more than one digit (such as "4225") use any of these methods, choose the one you prefer:
Subtraction with Regrouping (also called "Borrowing") This is the method most people use! 

Quick Subtraction (more complicated, but can be faster)  
Subtraction using Addition (also called the Complements Method) 
Worksheets
For practice try these Subtraction Worksheets