If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

# More on equivalent fractions

Sal uses fraction models and multiplication to find equivalent fractions. Created by Sal Khan.

## Want to join the conversation?

• The fraction are numers that some time you need to multiply
• how do you know what number to multiply by the fraction
• You need to apply the divisibility rules. For example since the divisibility rule of 5 which is if a value ends in 5 or 0 it is divisible by 5. Since both 5/25 is fully divisible by 5 it becomes 1/5.
• Sal do you have to only multiply by 2
• No, you have to multiply by how much the numerator or denominator fits into the numerator or denominator on the right as per the video
• How did he know to multiply by 4
• because you have to do this process to get to that certain fraction
• Could other numbers be divided and multiplied to the fraction? Not just two?
• from to he gives it away! why does he give it away!
• I think what you call giving it away, I would call proving :D In math you have to show that your approach is correct aaaallll of the time.
• what if its equvalent to 5/3