Verbalize the problem, this will allow you to catch any semantic mistakes that you might be making. After you have said the problem out loud, separate the problem into at least two parts. Look at the parts in your head, and try to accomplish the desired goal. Say three plus five equals eight. Clarity is the most important thing in mathematics.
Word problems exist in all realms of mathematics.
They are often people's nemesis. Make it a numerical problem. First, as above, observe the problem. Now, once again, verbalize the problem. Now go through the problem and pull out all numbers and units.