About this video
In the Khan Academy number line exercise, the task is to move a dot to three-fourths. Sal first changes the number of divisions to 4 so the space from 0 to 1 is split into fourths, then counts three fourths from zero to place the dot.
You'll be able to
- choose how many equal divisions to make from the denominator.
- count fourths from 0 to place 3/4 on a number line.
Key words
- division
- Here, one of the equal sections the number line is split into.
- three-fourths
- Three of four equal sections, written 3/4.
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.
Video © Khan Academy, used under CC BY-NC-SA. Watch on Khan Academy. Puzzicle is not affiliated with Khan Academy.