Mass and Volume Conversions
Convert between common metric mass and volume units without changing the represented quantity.
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Core concepts
Concept 1
Moving between kilograms, grams, milligrams and micrograms changes the number and unit together.
Exam cue: Write the conversion factor before moving the decimal point.
Concept 2
Volume conversions should use the exact metric relationship stated or conventionally required by the question.
Exam cue: Cancel units explicitly so the remaining unit matches the requested answer.
Risk pitfalls and guardrails
Multiplying when conversion requires division.
Guardrail: Do not select a familiar task if it ignores deterioration, consent, medicines risk, scope, communication or follow-up.
Confusing milligrams with micrograms, a thousand-fold error.
Guardrail: Do not select a familiar task if it ignores deterioration, consent, medicines risk, scope, communication or follow-up.
Memory anchors
How many milligrams are in one gram?
1,000 milligrams.
How many micrograms are in one milligram?
1,000 micrograms.
How many grams are in one kilogram?
1,000 grams.
How should a conversion factor be used?
Multiply by a ratio equal to one so unwanted units cancel.
What catches a thousand-fold error?
Estimate whether the numeric value should become larger or smaller in the new unit.
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
Convert 0.6 g to milligrams.
Convert 750 micrograms to milligrams.
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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