Why is it important to find a common denominator?

Finding a common denominator is important for adding, subtracting, or comparing fractions.

Multiples of a number are the results of multiplying that number by whole numbers (e.g., multiples of 3 are 3, 6, 9, 12, ...).

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

What does it mean to simplify a fraction?

Simplifying a fraction means reducing it to its simplest form, where the numerator and denominator have no common factors other than 1.

What is the relationship between fractions and division?

Fractions represent division; for example, $$\frac{a}{b}$$ means 'a divided by b'.

How can you convert fractions to have a common denominator?

To convert fractions to have a common denominator, multiply the numerator and denominator of each fraction by the necessary factors to reach the least common denominator.

What is an example of finding a common denominator?

For $$\frac{1}{4}$$ and $$\frac{1}{6}$$ , the least common denominator is 12. Convert to $$\frac{3}{12}$$ and $$\frac{2}{12}$$ .

Finding Common Denominators

Flashcard

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Mathematics

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6th Grade

•

Practice Problem

•

Medium

•

CCSS

7.NS.A.1C, 3.NF.A.1, 5.NF.B.3

Standards-aligned

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15 questions

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FLASHCARD QUESTION

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be compared or added together.

FLASHCARD QUESTION

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest multiple that is common to the denominators of two or more fractions.

FLASHCARD QUESTION

Front

How do you find the least common denominator?

Back

To find the least common denominator, list the multiples of each denominator and identify the smallest multiple that appears in both lists.

FLASHCARD QUESTION

Front

What is the least common denominator for $\frac{4}{11}$ and $\frac{2}{3}$ ?

Back

FLASHCARD QUESTION

Front

What is the least common denominator for $\frac{1}{3}$ and $\frac{4}{6}$ ?

Back

FLASHCARD QUESTION

Front

What is the least common denominator for $\frac{6}{10}$ and $\frac{2}{6}$ ?

Back

FLASHCARD QUESTION

Front

What is the least common denominator for $\frac{2}{5}$ and $\frac{3}{7}$ ?

Back

FLASHCARD QUESTION

Front

What is the least common denominator for $\frac{3}{8}$ and $\frac{1}{6}$ ?

Back

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