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1,001 Basic Math and Pre-Algebra Practice Problems For Dummies by Mark Zegarelli

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Chapter 7

Factors and Multiples

Factors and multiples are two key mathematical ideas that are both related to division. When one number is divisible by another number, the first number is a multiple of the second, and the second is a factor of the first. Calculating the factors and multiples of a number is essential for the more complicated math that follows, such as working with fractions, decimals, and percents (which are covered in Chapters 9 through 11).

The Problems You’ll Work On

The following are the types of problems to which you apply your math skills in this chapter:

check.png Deciding whether one number is a factor of another number

check.png Generating all the factors of a number

check.png Finding the prime factors of a number

check.png Discovering the greatest common factor (GCF) of two or more numbers

check.png Listing the first few multiples of a number

check.png Finding the least common multiple (LCM) of two or more numbers ...

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