Fraction Skills Challenge Quiz

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

The result of adding 3/5 and 1/3 with uncommon denominators is 14/15.

The result of multiplying 2/3 and 5/7 is 10/21.

The result of dividing 4/9 by 2/3 is 2/3.

Flashcards are hidden until you start studying

To add fractions with uncommon denominators, we need to find the least common multiple (LCM) of the denominators and convert both fractions to have that LCM as the denominator.
The result of adding 3/5 and 1/3 depends on finding the LCM of 5 and 3, which is 15, and then converting both fractions to have a denominator of 15.

To multiply fractions, we multiply the numerators and multiply the denominators.
The result of multiplying 2/3 and 5/7 is (2 × 5) / (3 × 7) = 10/21.

To divide fractions, we invert the second fraction (i.e., flip the numerator and denominator) and then multiply.
The result of dividing 4/9 by 2/3 is the result of multiplying 4/9 and 3/2, which is (4 × 3) / (9 × 2) = 12/18, which simplifies to 2/3.