answersLogoWhite

0


Best Answer

When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms
When adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.

User Avatar

Wiki User

6y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

11y ago

Finding the LCM helps in adding and subtracting numbers. Finding the GCF helps in reducing fractions to their simplest form.

This answer is:
User Avatar

User Avatar

Wiki User

8y ago

The GCF is useful when you are trying to reduce fractions.

The LCM is useful when you are trying to add and subtract unlike fractions.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

Yes.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: When is it useful to find the LCM or GCF of two numbers to solve a problem?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions