Untitled Deck Flashcards
(41 cards)
1
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Fractions Unit: Study Guide
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2
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Key Vocabulary
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3
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Common Denominator: A common multiple of two or more denominators.
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4
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Least Common Denominator (LCD): The least (smallest) common multiple of two or more denominators.
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5
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Reciprocal: The flipped version of a fraction (example: the reciprocal of 2/3 is 3/2).
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7
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Concepts
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8
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- Adding Fractions
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9
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Find the Least Common Denominator (LCD).
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10
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Rewrite each fraction as an equivalent fraction with the LCD.
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11
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Add the numerators
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keep the denominator.
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- Subtracting Fractions
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14
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Find the LCD.
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15
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Rewrite fractions with the same denominator.
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16
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Subtract the numerators.
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17
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Simplify if necessary.
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18
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Example:
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20
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- Multiplying Fractions
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21
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Multiply the numerators together.
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22
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Multiply the denominators together.
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23
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Simplify the result.
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Example:
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4. Dividing Fractions
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Multiply by the reciprocal of the second fraction.
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Simplify the final answer.
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Example:
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5. Adding or Subtracting Mixed Numbers
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Convert mixed numbers to improper fractions.
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Follow adding or subtracting steps.
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Convert the result back to a mixed number if needed.
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Example:
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6. Solving Word Problems
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Read carefully.
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Identify the operation needed (add
subtract
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Show all work neatly.
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Label your final answer with appropriate units.
