Pre-Algebra Help

In this section you'll find study materials for pre-algebra help. Use the links below to find the area of pre-algebra you're looking for help with. Each study guide comes complete with an explanation, example problems, and practice problems with solutions to help you learn pre-algebra.

Study Guides

showing 21 - 30 of 211
  • 21.

    Changing Mixed Numbers to Improper Fractions Help

    Changing Mixed Numbers to Improper Fractions A mixed number can be changed to an equivalent improper fraction. For example,

    Source: McGraw-Hill Professional
  • 22.

    Fractions Basic Concepts Practice Test

    Review the following concepts of needed: The Basics of Fractions Help Reducing Fractions to Lowest Terms ...

    Source: McGraw-Hill Professional
  • 23.

    Finding Common Denominators Help

    Finding Common Denominators In order to add or subtract two or more fractions, they must have the same denominator. This denominator is called a common denominator . For any two or more fractions, there are many common ...

    Source: McGraw-Hill Professional
  • 24.

    Addition of Fractions Help

    Addition of Fractions In order to add two or more fractions, the fractions must have the same denominator. To add two or more fractions: Step 1 Find the LCD of the ...

    Source: McGraw-Hill Professional
  • 25.

    Addition of Mixed Numbers Help

    Addition of Mixed Numbers To add mixed numbers, first add the fractions and then add the whole numbers; next simplify the answer, if necessary . Examples

    Source: McGraw-Hill Professional
  • 26.

    Subtraction of Fractions Help

    Subtraction of Fractions The rule for subtracting fractions is the same as the rule for adding fractions. To subtract two fractions : Step 1 Find the LCD of the ...

    Source: McGraw-Hill Professional
  • 27.

    Subtraction of Mixed Numbers Help

    Subtraction of Mixed Numbers Subtraction of mixed numbers is a little more complicated than addition of mixed numbers since it is sometimes necessary to borrow . To subtract two mixed ...

    Source: McGraw-Hill Professional
  • 28.

    Multiplication of Fractions Help

    Multiplication of Fractions Multiplying fractions uses the principle of cancellation . Cancellation saves you from reducing the answer after multiplying. To cancel, divide any numerator and ...

    Source: McGraw-Hill Professional
  • 29.

    Multiplication of Mixed Numbers Help

    Multiplication of Mixed Numbers Multiplying mixed numbers is similar to multiplying fractions. To multiply two or more mixed numbers, first change the mixed numbers to improper fractions and then follow the ...

    Source: McGraw-Hill Professional
  • 30.

    Division of Fractions Help

    Division of Fractions When dividing fractions, it is necessary to use the reciprocal of a fraction. To find the reciprocal of a fraction, interchange the numerator and the denominator. For example, the reciprocal of

    Source: McGraw-Hill Professional
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