ISEE Middle Level Quantitative Reasoning Flashcards: Calculating Averages

Study Calculating Averages in ISEE Middle Level Quantitative Reasoning with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

The mean of $5$ numbers is $6$ . Four numbers are $4, 5, 7, 8$ . What is the fifth number?

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ANSWER

$6$ . Total sum is $6 \times 5 = 30$ ; subtract sum of known numbers $4+5+7+8=24$ to find the fifth.

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ISEE Middle Level Quantitative Reasoning: Data Analysis and Probability

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What this deck covers

This deck focuses on Calculating Averages, giving you a quick way to review the definitions, rules, and examples that matter most for ISEE Middle Level Quantitative Reasoning.

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 22Practice questions for this set

The average of a set of 10 distinct positive integers is 15. If a new integer, 15, is added to the set, what is the new average of the 11 integers?

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