Finding the Common Difference

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What is the definition of a common difference in a sequence?

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The common difference is the constant amount that each term in an arithmetic sequence increases or decreases by. It is found by subtracting any term from the subsequent term.

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4

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2

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5

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2

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3

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How do you find the common difference in a sequence?

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To find the common difference, subtract the first term from the second term (or any term from the subsequent term).

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What is an arithmetic sequence?

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An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant.

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If the first term of an arithmetic sequence is 10 and the common difference is 3, what is the fifth term?

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The fifth term is 10 + 4*3 = 22.

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What is the formula for the nth term of an arithmetic sequence?

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