Dosage Ready | Nursing math practice

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Tablets and liquidsDesired dose ÷ dose on hand × quantityD ÷ H × Q

Weight conversionConvert pounds before using a mg/kg order.kg = lb ÷ 2.2

TemperatureConvert both directions.

°F = (°C × 1.8) + 32
°C = (°F − 32) ÷ 1.8

Household conversions1 tsp ≈ 5 mL · 1 Tbsp ≈ 15 mL · 1 fl oz ≈ 30 mL

Drop factorsRead the tubing package; macrodrip commonly uses 10, 15, or 20 gtt/mL, and microdrip uses 60 gtt/mL.

IV pumpConvert minutes to hours first.mL/hr = volume ÷ hours

Gravity dripUse the tubing drop factor.gtt/min = mL × gtt/mL ÷ minutes

AC before meals · PC after meals · HS at bedtime. Read the full medication order and follow your facility’s approved abbreviations.

Write the unit you need. Convert units, set up the equation, and ask whether the answer makes sense. Round only as the question directs.