Exams
Topic module

Percentages of Amounts

Calculate a percentage of a quantity and distinguish the part, whole and percentage rate.

Long-form learning
Concept to Risk to Memory to Check-up

How to prepare for the CSNT

Use 601 original multiple-choice questions to extract the right values, preserve units and precision, and verify each calculation. The bank is independent practice based only on public skill descriptions; it contains no recalled or secure test items.

Core concepts

Concept 1

percentage as per hundred

Exam cue: Identify the whole before choosing the percentage denominator.

Concept 2

percentage of an amount

Exam cue: Convert a percentage to a decimal multiplier for direct calculation.

Concept 3

part and whole

Concept 4

percentage multipliers

Risk pitfalls and guardrails

Using the changed value as the original whole.

Guardrail: Do not copy official questions, invent a fixed test length or weighting, ignore units, round too early, infer score from difficulty or rely on returning to an earlier item.

Dividing by 100 twice.

Guardrail: Do not copy official questions, invent a fixed test length or weighting, ignore units, round too early, infer score from difficulty or rely on returning to an earlier item.

Memory anchors

Percent means per hundred

Convert p% to p divided by 100.

Of means multiply

Use the percentage multiplier on the whole.

Part over whole

Percentage equals part divided by whole times 100.

Name the whole

The correct denominator controls the result.

Bounds check

A percentage below 100% of a positive whole should be smaller than the whole.

Checkpoint rule

Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.

Knowledge Check (after reading)

Short check-up to confirm understanding of this module.

Check-up Questions

1-2 question checkpoint

What is 15% of £840?

A team completes 72% of 1,250 cases. How many are complete?

Answer all questions to submit.

Next step personalized recommendations

Continue learning

Move forward only after this module is stable.

Next topic: Percentage Change and Reverse ValuesStart focused practiceOpen flashcardsView personalized queue

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