Adding monomials is a skill all students must learn to master. When mastered it must become second nature  just like adding 2 + 3! I use the proper mathematical terms when referencing the different parts of a monomial in this section. If you or your child is unfamiliar with these  please read the general introduction to Monomials before continuing.
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Like Terms are monomials with the same VARIABLE part.
N.B. The same variable part implies the terms have the same variable raised to the same Exponent (power, Index).
Worked Example 1  
 
Worked Example 2  
 
Worked Example 3  

As you can see, when it comes to adding monomials it is simply a case of identifying that the variables are IDENTICAL and simply adding the coefficients.
If you enjoyed the information presented here adding monomials, consider checking out everything else in the Basic Algebra section.
There is a lot more information, tips & hints for basic mathematics. Check out the rest of what Printable Math Worksheets has to offer.
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