Applying GCF and LCM to Fraction Operations

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Presentation transcript:

Applying GCF and LCM to Fraction Operations EQ: How do you use the GCF and LCM when adding, subtracting, and multiplying fractions?

Multiplying Fractions To multiply two fractions you first multiply the numerators and then multiply the denominators. The resulting product may need to be written in simplest form. To write a fraction in simplest form, you can divide both the numerator and the denominator by their greatest common factor.

Multiplying Fractions and Whole Numbers To multiply a fraction by a whole number, you rewrite the whole numberas a fraction and multiply the two fractions. Remember to use the GCF to write the product in simplest form.

Adding and Subtracting Fractions You have learned that to add or subtract two fractions, you can rewrite the fractions so they have the same denominator. You can use the least common multiple of the denominators of the fractions to rewrite the fractions.