Lesson 4-7
Mastering Mass/Weight Conversions

 

Metric US Standard Apothecary
microgram
milligram
gram
kilogram
mcg
mg
g
kg
ounce
pound
ton
oz
lb
T
grain
gr

 

Note

The label for micrograms (mcg) is used primarily in medicine and pharmacy. It is written as mg in most technical trades and science professions.

 

 

 

Mass (Weight) Conversion Map

 

 

Metric Mass Conversions

 

 

1000 mcg per 1 mg
or
1 mg per 1000 mcg
1000 mg per 1 g
or
1 g per 1000 mg
1000 g per 1 kg
or
1 kg per 1000 g

Example 1: Converting Micrograms to Milligrams

Convert 3500 micrograms to milligrams.

Given Mass:  3500 mcg
Conversion Factor:  1000 mcg per 1 mg
 
Set up the ratios:
Cancel the labels:
Complete the math:
Result: 3.5 mg  

 

Examples 2: Converting Metric Mass

2-1. Convert 0.02 gm to milligrams.

2-2. Express 5 mg in micrograms.

Volume Conversions Drill

Work with this drill routine until you can consistently make the conversions correctly.

Click the Answer button to see the correct answer to the question.
Click the Next button to see the next question.

 

US Standard Mass (Weight) Conversions

 

16 oz per 1 lb
or
1 lb per 16 oz
2000 lb per 1 T
or
1 T per 2000 lb

Example 3. Converting Pounds to Ounces

Convert 35 oz to pounds

Given Mass:  35 oz
Conversion Factor:  1 lb per 16 oz
 
Set up the ratios:
Cancel the labels:
Complete the math:
Result: 2.19 lb  

Mass Conversions Drill

Work with this drill routine until you can consistently make the conversions correctly.

Click the Answer button to see the correct answer to the question.
Click the Next button to see the next question.

 

 

Mixed-Standard Mass Conversions

1 gr per 60 mg
or
60 mg per 1 gr

Examples x: Converting Grains

 

 

 

How many grains in one ounce?

 

 

 

 

0408

Lesson 4-8
Mastering Time and Rate Conversions

 

 

 

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