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Fraction Methods

The document outlines the steps for adding and subtracting fractions with unlike denominators, including finding the least common denominator and simplifying the result. It also explains how to multiply and divide fractions by whole numbers, emphasizing the conversion of whole numbers to fractions and the simplification of results. Each operation is broken down into clear steps for better understanding.

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domho66
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9 views3 pages

Fraction Methods

The document outlines the steps for adding and subtracting fractions with unlike denominators, including finding the least common denominator and simplifying the result. It also explains how to multiply and divide fractions by whole numbers, emphasizing the conversion of whole numbers to fractions and the simplification of results. Each operation is broken down into clear steps for better understanding.

Uploaded by

domho66
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Adding and Subtracting Fractions with Unlike Denominators

Step 1: Find the Least Common Denominator (LCD)

• Look at the denominators (the bottom numbers of the fractions).


• Find the smallest number that both denominators can divide into evenly.

Step 2: Make the Denominators the Same

• Change each fraction so that the denominator becomes the LCD.


• Multiply both the numerator (top number) and denominator (bottom number) by
the same number to create equivalent fractions.

Step 3: Add or Subtract the Fractions

• Once the denominators are the same, add or subtract only the numerators.
• Keep the denominator the same.

Step 4: Simplify the Answer

• If needed, simplify the fraction by dividing both the numerator and denominator
by the greatest common factor (GCF).
• If the answer is an improper fraction (numerator is bigger than the denominator),
change it into a mixed number.
Multiplying Fractions by a Whole Number

Step 1: Write the Whole Number as a Fraction

• Convert the whole number into a fraction by writing it over 1.

Step 2: Multiply

• Multiply the numerators (top numbers) together.


• Multiply the denominators (bottom numbers) together.

Step 3: Simplify

• If needed, simplify the fraction or convert it into a mixed number.


Dividing Fractions by a Whole Number

Step 1: Write the Whole Number as a Fraction

• Convert the whole number into a fraction by writing it over 1.

Step 2: Flip and Multiply

• Take the reciprocal (flip) of the whole number fraction.


• Multiply the fractions.

Step 3: Simplify

• If needed, simplify the fraction or convert it into a mixed number.

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