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Why This Matters for Nursing: Medication doses often come in fractions. If a patient needs ½ tablet in the morning and ¼ tablet at night, you need to know the total: ¾ tablet per day.
A fraction represents a part of a whole. It has two parts: - Numerator (top): How many parts you have - Denominator (bottom): How many equal parts make the whole
To add or subtract fractions, the denominators MUST be the same. If they're not, you need to find a common denominator first.
Same denominators? Just add/subtract the numerators. Keep the denominator the same.
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