# Math/Calculations; Conversions

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1. 1 mL= ? minims; ? gtts
15 minims (min or m); 15 gtts
2. 1 fluid dram = ? mL; ? teaspoons
4-5 mL; 1 teaspoon
3. 15 mL = ? fluid drams; ? tablespoons
4 fluid drams; 1 tbsp
4. 30 mL = ? ounces
1 ounce
5. 500 mL = ? pints (pt)
1 pint (or approx. 480 mL)
6. 1000 mL = ? pints; ? quarts
2 pints; 1 quart
7. 4000 mL = ? pints; ? quarts; ? cups; ? gallons
8 pints; 2 quarts; 16 cups; 1 gallon; (approx. 3840 mL in a gallon)
8. 1 grain (gr) = ? mg
60 mg
9. 1 mg = ? grain
1/60 grain
10. 1 gram = ? grains
15 grains
11. 4 g = ? drams
1 dram
12. 30 g = ? ounce
1 ounce
13. 500 g = ? pounds (lbs)
1.1 pound
14. 1000 g (1 kg) = ? pounds
2.2 pounds
15. Roman numeral L ?
50
16. Roman Numeral C?
100
17. Roman Numeral D?
500
18. Roman Numeral M?
1000
19. Converting ounces to lbs?
Divide the ounces by 16 oz., then round that number to the tenth and place it in the equation and don't round again till the end
20. Round everything to tenth at the end of the equation on the quiz except for...?
When converting ounces to lbs, round when dividing ounces by 16oz, and then not again till end of equation.  One question on quiz will state not to round at all!
21. Metric table:
Kilogram = ?
Hectogram = ?
Dekagram = ?
Gram/Liter = ?
Decigram/Deciliter = ?
Centigram = ?
Milligram/Milliliter = ?
Microgram = ?
• Kg = thousands
• Hectogram = hundreds
• Dekagram = Tens
• Gram/Liter = 1 Unit
• Decigram/Deciliter = Tenths
• Centigram = Hundreths
• Milligram/Milliliter = Thousandths
• Microgram = Hundred thousandths
22. Capsule =
Drop =
Grain =
Gram =
Kilogram =
Liter =
Microgram=
• cap
• gtt
• gr
• g, gm
• kg
• L/l
• mcg
23. Milliequilvalant=
Milligram=
Milliliter=
Ounce=
Teaspoon=
Tablespoon=
Tablet=
• mEg
• mg
• ml/mL
• oz
• tsp
• Tbsp
• tab
24. By mouth=
Intramuscular=
Intravenous=
Intravenous piggyback=
Left eye=
Right eye=
Both eyes=
Subcutaneous=
• po/PO (per os)
• IM
• IV
• IVPB
• OS
• OD
• OU
• SC/SQ or SubQ
25. After meals=
Before meals=
Every---hour=
Four times a day=
Hour of sleep=
if necessary; as needed=
immediately=
three times a day=
twice a day=
• pc
• ac
• (q 1hr, q2hr, etc)
• QID, qid
• HS, hs
• prn
• stat
• TID, tid
• BID, bid
26. As desired=
Elixir=
Liquid=
Nothing by mouth=
• elix
• liq
• NPO
27. 1 cup = ? mL
240
28. 1mg = ? mcg
1000 mcg
29. Reading from right to left, each place is 10 times larger in
value. For example, 100 is 10 times larger than 10 & 1 is 10 times larger
than 0.1

Smaller to Larger
Units:   Move the decimal point
to the LEFT

Larger
to Smaller Units:   Move the decimal point to the RIGHT
30. The basic unit of weight in
the metric system is the gram (G or gm). The basic length is the meter (m) and
the basic volume is the liter (L or l). Metric measurements use the decimal
system as the basis for its units. The prefix of the unit identifies its
decimal location and value.
31. Kings
Have
Dragons
Under
Dark
Castle
Moats

millions
Hundred
thousand
Ten
thousand
thousands
hundreds
tens
ones
tenths
hundredths
thousandths
Ten thousandths
Hundred
thousandths
millionths

1,000,000
100,000
10,000
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001
0.000001

Kilo
Hecto
Deka
Basic
Unit
Deci
Centi
Milli
Micro
32. Successful Math for
Nurses

1.
I, as the nurse, am responsible for the accuracy
of medication math and administration and can not assume that the pharmacy and
physician will always be correct.
2.
Check and recheck medication orders and doses
along with labels.
3.
Label all answers with correct unit of
measurement

a.
Exp:  4mg;
4mL;  4 units;  4mcg;  4 teaspoons-
these are all VERY different amounts of medication and could KILL
someone if administering the wrong dose due to label error.
4.
Think about the test question and what it is

a.
Capsules-
will be whole number. Do not crush, do not divide

b.
Tablets-
will either be whole or half number

c.
Liquid/suspension-
in OZ or mL whole numbers down to tenths

d.
Syringe-
whole number down to hundredths

e.
Insulin-
ONLY in Units

f.
IV- Drops-
Whole number; Pump- Whole numbers to hundredths with Peds and special
medication drips.

g.
Temperature-
Do not round. Can be whole or to the tenth (98.8 F)

h.
Weight-
Whole numbers in Lbs or kg with OZ. Be sure and do your conversion to and from
5.
Do not round in the middle of an equation, only
at the end if indicated.

6.