Cracking The SAT Premium

The Math questions on your SAT will appear in two different formats: Regular multiple-choice questions Grid-In ...

Raising to a power (3^3 ) Finding a square root ( ) If you’re like most students, you probably haven ...

operations. The safe, smart way is to clear the calculator after every individual operation, performing PEMDAS yourself ...

If you’re multiplying the sum of two numbers by a third number, you can multiply each number in your sum indi ...

Fractions and Your Calculator When calculator use is not allowed, be sure to write out all ...

We call this procedure the Bowtie because the arrows make it look like a bowtie. Use the Bowtie to add ...

reduce first, your final answer will be in the form that the test writers are looking for. Here’s anot ...

Reducing Fractions When you add or multiply fractions, you will very often end up with a big fraction ...

12 and 60, you can no doubt see that 6 is a factor of both. Dividing top and bottom by 6 yields . Now ...

DRILL 3 Try converting the following mixed numbers. Answers can be found on this page. 1. 8 2. 2 3. 5 4. 2 5. 6 ...

A Final Word About Fractions and Calculators Throughout this section, we’ve given you some hints about ...

5. = 6. 7. DECIMALS A Decimal Is Just Another Way of Expressing a Fraction Fractions can be expressed as decimals. ...

2. = 3. 3.72 ÷ 0.02 = 4. 0.71 – 3.6 = Comparing Decimals Some SAT problems will ask you to determine whet ...

Exponents Are a Kind of Shorthand Many numbers are the product of the same factor multiplied over and over ...

within them. For example, (3x)^2 = 9x^2 , not 3x^2. Similarly, , not . But the distribution rule applies only ...

If calculator use was allowed on this one, you could also do this question by plugging in the answer c ...

= . For example, = = . = positive root only. For example, = 4. Note that rule 1 ...

x–n = Fractional exponents are a fancy way of taking roots and powers: = Here’s an example: 14.If x ...

one works, the answer is (C). So, try (II). Use the power-multiply rule: = = . So, since (II) works, ...

Here’s How to Read It To find the cost of a television when 225 televisions are sold, start at 225 on t ...