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NES Essential Academic Skills Mathematics Review: Number sense and operations

Review number sense and operations for this NES Essential Academic Skills Mathematics question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: Number sense and operations

Prompt focus: A store marks down a jacket originally priced at $80 by 25 percent. What is the sale price of the jacket?

Why the correct answer works

$60

Correct. 25 percent of 80 is 20, and 80 minus 20 equals 60 dollars.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

Use the rationale to connect the prompt clue, the correct choice, and the tested objective before retaking a similar item.

Simple analogy

Think of number sense and operations like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next