Converting Fractions to Decimals

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1 Converting Fractions to Decimals There is a close relationship between fractions and decimals. In fact, fractions and decimals are just two different ways of writing numbers. For example, consider and 0.5. Both of these numbers represent exactly the same quantity (or value). The only difference is that they have been written in two different ways: is a fraction; and 0.5 is a decimal. Since fractions and decimals can represent the same quantity you are able to change a fraction to its equivalent value as a decimal. This might be important in a clinical environment when you perform a medication calculation and your fractional answer needs to be drawn up into a syringe which specifies volumes in decimals. Rules for converting a Fraction to a Decimal: Divide the denominator into the numerator using short division. Give your answer to the specified number of decimal places requested in the question information. We shall be concerned with cases: Changing Proper and Improper Fractions to a decimal. Changing a Mixed Number to a decimal.

2 Converting Proper and Improper Fractions to Decimals Recall that Proper and Improper Fractions are fractions do not have a whole number at the front. To convert an Improper or Proper Fraction to a decimal you must divide the numerator (the top number) by the denominator (the bottom number) using short division. That is: Numerator Denominator Another way to say this is: The top number divided by the bottom number using short division. In order to carry this out, skills in short division and rounding are critical. If you do not feel confident with short division and rounding it is essential that you review these sections of theory before continuing. A patient is taking of a tablet daily. Write this fraction as a decimal.. Divide the numerator by the denominator using short division. The answer will be the value of that original fraction expressed as a decimal: = Write this fraction in short division notation like this:

3 and so = 0.5 as a decimal) Change to a decimal and express the answer to decimal places.. Start by dividing the numerator by the denominator using short division: = = 0.5 and so = 0.5 to decimal places) Write correct to decimal places.. Divide the numerator by the denominator using short division: =

4 = 0. and so = 0. to decimal places) Converting Mixed Numbers to Decimals Recall that Mixed Numbers are fractions that have a whole number at the front. They represent a quantity larger than one whole and therefore our final decimal answer must also be larger than one whole. To change a Mixed Number to a decimal you should first change the Mixed Number to an Improper Fraction and then divide the numerator (the top number) by the denominator (bottom number) exactly as you did for Proper and Improper Fractions. That is: Numerator Denominator Change to a decimal and express your answer to decimal places.. You must first change the Mixed Number to an Improper Fraction: = 8

5 . Now divide the numerator by the denominator using short division: 8 = = and so =.66 to decimal places) Change to a decimal and express your answer to decimal places.. Change the Mixed Number to an Improper Fraction: = 9. Divide the numerator by the denominator (top number divided by the bottom number) using short division: 9 = 9

6 =.5 9 and so =.5 to decimal places)

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