6010 - 6000 ÷ 10 \=? & x20;

RRB Staff Nurse Delhi-2015

Reasoning

Medium

6010 - 6000 ÷ 10 =?

Appeared in: RRB Staff Nurse Delhi-2015

The problem requires applying the BODMAS (Brackets, Orders, Division, Multiplication, Addition, Subtraction) rule for the correct order of operations.
According to BODMAS, Division must be performed before Subtraction.
First, calculate the division: 6000 ÷ 10 = 600.
Then, perform the subtraction: 6010 - 600 = 5410.

Option A: This is a simple calculation error, likely made during the final subtraction step.
Option C: This result is incorrect. A common mistake is to perform subtraction first (6010 - 6000 = 10) and then divide (10 ÷ 10 = 1). The option 0 is an incorrect value provided as a distractor.
Option D: This is a large, incorrect value that does not follow any logical calculation from the expression.

Visual 1: Infographic: A visual pyramid or flowchart illustrating the hierarchy of the BODMAS/PEMDAS rule, showing Brackets at the top and Addition/Subtraction at the bottom.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Order of Operations (BODMAS/PEMDAS) as background academic context rather than a clinical decision trigger.
Accurate calculation is a critical skill for nurses to ensure patient safety, especially in medication administration.
Errors in calculation can lead to incorrect drug dosages, which can have severe or fatal consequences. For example, miscalculating an IV drip rate or a pediatric dose can cause significant harm.
What if the expression was (6010 - 6000) ÷ 10? The brackets would force the subtraction to be performed first, leading to 10 ÷ 10 = 1. This highlights how punctuation (brackets) changes the order of operations and the final result, similar to how specific instructions in a prescription are critical.

How to Approach the Question

First, scan the mathematical expression to identify all the operators present (in this case, subtraction and division).
Recall the order of operations using the mnemonic BODMAS or PEMDAS.
Apply the rule: Division has a higher priority than Subtraction, so perform the division operation first.
Calculate 6000 ÷ 10.
Substitute the result back into the expression and perform the final subtraction.
Compare your final answer with the given options to select the correct one.

Concept Tested & Keywords

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Practise the full RRB Staff Nurse Delhi-2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.