Urgent Math question!!!

blondy2061h, MSN, RN · Aug 20, 2009

All of my tests told people what to digit to round to.

OregonGal · Aug 20, 2009

It depends on the med/method. I agree with previous post.

Remember your leading zeros: 0.5

Also, consider the syringe size you are using. Can you really draw up 0.666 of med--realistically? No. Probably 0.7

blondy2061h, MSN, RN · Aug 20, 2009

It depends on the med/method. I agree with previous post.
Remember your leading zeros: 0.5
Also, consider the syringe size you are using. Can you really draw up 0.666 of med--realistically? No. Probably 0.7

Likewise, with pills, they're probably not gonna want to see anything less than 1/2 a tab.

firefox828 · Aug 20, 2009

All of my tests told people what to digit to round to.

I agree.

For example: 158.27

Round to the nearest ones (8 place) = 158... why? the number next to it is 2; if it's 5 and up, it would be 159.

Round to the nearest tens ( 5 place) = 160... why? the number next to it is 8

Round to the nearest tenths (2 place) = 158.3

Assuming 63.63 is for fluid rate; rounding to the whole number = 64, for peds they may want the tenths digit, so it would be 63.6.

Hope this helps... Good luck!

zuzi · Aug 20, 2009

Ok look here .. READ last number if is less than 5, ignore it, if is more than five go with the last two numbers up till you find a round number....finished in zero

o.666....last one is 6, so read last two ones...66... go with both up till a round number appear (66, 67, 68, 69, 70), 70 is you number

So number is 0.670... zero dissapers so finally you have 0.67

More the same....

For example, 16.88 is it 16.9 or 17.

look at the last number is...8 is more than 5 so choose last two 88 ...go up till a round number, 89 , 90... here you are 90 is your number...16.90 that menas 16.9

For 0.542 is it 0.54 or 0.5.

hey last number is 2... frget about it is less than 5 erase it... 0.54

For .52 is it .5

last number is 2.... forget about it is less than 5, erase it.... .5

What is it for 63.63

Last number 3, less than 5 erase it, forget about it, 63.6

What is it 158.2

Last number 2, is less than 5 forget about it , erase it....158

what is it for 0.666

Last number 6... more than 5... take last two numbers 66.. add units until you have a round number.... 67, 68, 69, 70.... 70 is. .... 0.670...menas 0,67

What is it for 6.45

last number 5 ok... now here is a TRICK you have 3 options...

1. to let number how it is

2. to approximate the number by adding

3. to approximate number by substarcting

by adding will be 6.5

by substracting will be 6.4

DaveMac · Aug 20, 2009

.3 is 0.3 because .3 could be mistaken for 3.

And 3.0 is 3, because 3.0 could be mistaken for 30.

Most use the 4/5 split when rounding.

The questions will give you the decimal they want or the instructors will. i.e. answer to the 2 decimal point.

Another formula to remember is A:B=C:D or A/B=C/D.

Both are the same. It reads A is to B as C is to D.

Example:

Order Rocephin 750mg IV.

On Hand Rocephin 1G in 100ml 0.9% saline.

Okay, a lot of numbers here. REMEMBER - ONE STEP AT A TIME.

Your answer you are looking for is how many ml do you give.

Now 1G (gram) is the same as 1000mg. SO

750mg is to Xml as 1000mg is to 100ml.

Written - 750mg : Xml = 1000mg : 100ml

Multiple the ends together and the middles together

750 x 100 = x1000

75000 = x1000

now divide 1000 into both sides

75 = xml

75ml

This does about 95% of all your math in nursing. You may have to do it 2 or 3 times to come up with the final answer, but it is easy and helpful.

Know this was long, but it has helped many a new student and even some "experienced" nurses who forgot their way in the offices.

Good luck

DaveMac · Aug 20, 2009

The formula was suppose to be

A : B = C : D

if the : and D are put together her you get = >

favflu · Aug 20, 2009

as a clinical nursing instructor: before you are tested in nursing math, you have to be given a class on pharmocology. this will involve dosage calculations (po meds, injections, intravenous, topical etc). on the other hand, you must have some basic understanding in math. if you are not taking the nursing pharmocology test as yet, giving an explanation to your question will further confused you. The pharmocology test is vital for the nurse to assess and understand the information on her own. this will determine if the nurse is competent enough to provide safe practice to the public.

Example:

1) rounding answers for non-parental meds (pills, capsules, unscored tablets, or suppositories should be rounded to the nearest whole number (1.8 =2).

2) scored tablets or suppositories should be rounded to the nearest half (0.47 = 0.5. or 1/2, tablet).

3) problems involving oral, liquid medications, it is accurate enough to round to one decimal place (7.46 = 7.5)

4) parental injection medications (intramuscular, subcutaneous, intradermal)

can be rounded off to either one or two decimal places.

Remember 0.7 or 0.75ml of FLUID can be drawn into a syringe. No need to round it to the nearest whole number.

5) Intravenous calculations

answers are always rounded to whole numbers (31.3 = 31) or (31.5 = 32)

YOU CAN COPY THIS AND USE IT AS A GUIDE

ALSO, GET A NURSING PHARMACOLOGY BOOK FROM AMAZON OR EBAY. HOW ABOUT NURSING PHARMACOLOGY FOR DUMMIES, STUDENTS FIND THIS BOOK VERY USEFUL.

GOOD LUCK

favflu · Aug 20, 2009

or 0.67 dependent upon the type of syringe you are using (tuberculin syringe can give a more accurate measurement)

rita.kumar83 · Aug 21, 2009

Thank you very much! You have really helped me through your study guide. I will always keep it to help myself in rounding. Thanks a ton!!!