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Enhance your S.A.T. math skills with strategic shortcuts and tactics! Learn to identify alternative ways to solve problems and save time. Find quick, accurate solutions without unnecessary steps. Practice examples to improve your efficiency and boost your test-taking abilities.
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S.A.T. Math Testing Tactics Tactic 10: Don’t Do More Than You Have To
Look for shortcuts • Many problems have more than one correct way to obtain the right solution • Think: Quick, Efficient, Accurate Don’t Do More Than You Have To!
If , what is ? First: Notice that there is a 3x in the given equation AND the expression we are evaluating. This means we can solve for 3x instead of x. This will save time! 3 Example 10.1
If and , what is the average (arithmetic mean) of x and y? First, what does the average of x and y look like? Example 10.2
Next, since we have two equations, let’s try adding them together (Tactic 17): Average of x and y = 1.8 Ex 10.2 (continued)
If , what is the value of ? Notice the equation and the expression both have a 5x 7 Example 10.3
ALWAYS LOOK FOR SHORTCUTS! Don’t find 20% and 30% separately if you can find 50% once. Don’t find x if you really only need 5x. Don’t find individual numbers if you only need their sum. DON’T WASTE PRECIOUS TIME! In conclusion: EVERY SECOND IS PRECIOUS– WORK SMARTER, NOT HARDER!