PROBLEM SOLVING: A Student’s Guide
This set of rules will get you through even the longest assignment in the minimum time with little or no thinking.
If at all possible, avoid reading the problem. Reading the problem only consumes time and causes confusion.
Extract the numbers from the problem in the order in which they appear. Pay no attention for numbers written in words.
If rule 2 yields three or more numbers, the best bet for getting the answer is adding them together.
If there are only two numbers which are approximately the same size, then subtraction should give the best results.
If there are only two numbers in the problem and one is much smaller than the other, then divide if it goes evenly-otherwise, multiply.
If the problem seems like it calls for a formula, pick a formula that has enough letters to use all the numbers given in the problem.
Never, never spend too much time solving problems.