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: Perform addition and subtraction with whole numbers
Prompt focus: A nurse counts 1,248 milliliters of fluid in one IV bag and 876 milliliters in a second bag. What is the total volume of fluid in both bags?
Why the correct answer works
2,124 milliliters
Correct. Adding 1,248 and 876 gives 2,124 milliliters.
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
To combine two quantities you add them. Line up the place values and add column by column, carrying when a column total reaches ten or more.
Simple analogy
Think of perform addition and subtraction with whole numbers 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.