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### Course: Arithmetic (all content)>Unit 5

Lesson 3: Fractions on the number line

# Fractions on number line widget

Sal uses the Khan Academy number line widget.

## Want to join the conversation?

• Hi! I was wondering how i enter full screen? The video without full screen, for me, is super small to where I can't see. There isn't a full screen button in the left or right bottom corner. Got any advice of how to either enter full screen or make the screen bigger?
(4 votes)
• You should see a little square in the lower right of the video screen. Clicking on that square should take you to full screen.
(4 votes)
• i got confused with his mouse and my mouse
(5 votes)
• Why is every thing so old!!
O
(4 votes)
• Because they were made a long time ago and they didn't update it because they did not need to.
(1 vote)
• how do you do this unit
(4 votes)
• Just do it 😀
(0 votes)
• how to write number lines
(0 votes)
• 1) Draw a long line on a piece of paper. This will be the base of your number line

2) Make hash marks on your line. This will make it look like a train track

3) On the left, start writing numbers above the hashmarks. Start with zero above the first hashmark on the left

4) Stop numbering at 20.
(5 votes)
• Hi!If you can do math are u math r u da math?if fractoins da math i r da math?anser if ur 4th grade or 3rd
(2 votes)
• 3rd too
(0 votes)
• why do you have that orang dot thair for?
(1 vote)
• It is there to mark the fraction. :)
Have an amazing day!
-Navisha
(1 vote)
• Is there a limit to how many tick marks you can make?
(1 vote)
• Darn it.
(1 vote)
• second video? WHY?
(0 votes)
• It was a very short topic, so Sal didn't need to explain much. :) Have a great day!
-Navisha
(1 vote)
• that so hard hove can you do that of compering fractions wow!10/10 thatcool and gardto gard
(0 votes)

## Video transcript

- [Voiceover] We're on the fractions on the number line exercise on Khan Academy, and they ask us to move the orange dot to three-fourths on the number line. Change the number of divisions to create tick marks on the number line. Let's see what's going on here. I have the space from zero to one on the number line. If I want to move it to three-fourths, what I would first want to do is divide the space between zero and one into fourths, into four equal sections. I would want to have four divisions here. And there you have it, four divisions. I typed in the number four and have four equal divisions. One, two, three, four. This is going to be a fourth, that's another fourth, that's another fourth, and that's another fourth. What we care about is three-fourths. Once again, that's one-fourth, this would be another fourth, getting us to two-fourths, and then this would be another fourth, getting us to three-fourths. So, there you have it. That is three-fourths on the number line.