ISEE Lower Level Mathematics Achievement Flashcards: Missing Number In Sequences

Study Missing Number In Sequences in ISEE Lower Level Mathematics Achievement with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is the missing term in the arithmetic sequence $\frac{1}{2}, \frac{3}{2}, \square, \frac{7}{2}$ ?

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ANSWER

$\frac{5}{2}$ . The common difference is $1$ , determined from $\frac{3}{2} - \frac{1}{2}$ , and added to $\frac{3}{2}$ to find the missing term.

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ISEE Lower Level Mathematics Achievement: Patterns and Sequences

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What this deck covers

This deck focuses on Missing Number In Sequences, giving you a quick way to review the definitions, rules, and examples that matter most for ISEE Lower Level Mathematics Achievement.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 18Practice questions for this set

The numbers 18,

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, 54 are part of an arithmetic sequence with two missing terms. What is the first missing number?

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