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### Course: 6th grade (Illustrative Mathematics)>Unit 4

Lesson 3: Lesson 11: Using an algorithm to divide fractions

# Writing fraction division story problems

Darryl spent 24 1/4 hours writing a novel chapter, and we explore situations where dividing 24 1/4 by 3/4 is meaningful. Two examples include calculating the number of days spent writing with 45-minute daily sessions and determining the time spent illustrating if it's 3/4 as long as writing. Creative thinking helps uncover more scenarios. Created by Sal Khan.

## Want to join the conversation?

• Someone pls help...I am very confused.
I was trying to do the exercise but had to come back to the video but I couldn't understand what was going on.
Pls help.
• this make no sense
• it dose make no sense
• how? just how?
• i need help how do i understand this??
• idk try looking i
• the questions are always different and this guy always picks the hard way
• this makes no sense
• dude this video does not help in anyway btw The quiz in the next lesson is like 2x harder
• 💀Fr can someone help me understand this..
• I don't get it. I mean, the video barely makes sense to me, and the quiz is so much harder, why?
• i saw tons of comments saying they didn't understand this so ill help out:)

lets say we have 2 1/4 divided by 1/3

you first would take the 2 and 1/4 and convert it into 9/4

now you take the 9/4 and you can multiply by the reciprocal (keep change flip)

now its just 9/4 x 1/3

to get the answer just multiply straight across

9 x 1 is nine so that's the first part

than you multiply 4x3 and than you get 12