## Subtitles section Play video

• - [Instructor] What we want to do in this video

• is figure out what two divided by 0.4 is,

• or two divided by 4/10.

• So why don't you pause this video

• and try to figure out what it is.

• And as a little bit of a hint,

• think about two on the number line

• and think about how many jumps of 4/10

• do you have to make starting at zero to get to two,

• to figure out what two divided by 4/10 is.

• All right, now let's do it together.

• And as I mentioned in my hint,

• let's just think about how many jumps

• of 4/10 we have to make to go from zero to two.

• And on this number line, each of these, this is a 10th

• right over here because we can see there's 10 equal spaces

• between zero and one.

• So let's take some jumps of 4/10.

• So if we start at zero, we can make,

• let's see there's 1/10, 2/10, 3/10, 4/10.

• That's one jump.

• I'll number that.

• And then we can make our next jump of one, two, three, 4/10.

• Guess that's right over there.

• That's two jumps.

• Then our next jump will take us right over there.

• So once again I'm just making equal jumps of 4/10.

• Then my next jump

• will take us one, two, three, 4/10 further.

• So that gets us right over there.

• We've taken four jumps.

• And then it looks like our fifth jump gets us there.

• One, two, three, 4/10.

• Yup.

• Our fifth jump gets us exactly to two.

• So we've taken five jumps of 4/10 to go from zero to two

• or another way to think about it is

• if you were to divide two into equal chunks of 4/10,

• you could divide into five equal chunks of 4/10.

• Or you could make five equal jumps

• to go from five equal jumps of 4/10

• to go from zero to two.

- [Instructor] What we want to do in this video

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# Dividing a whole number by a decimal on a number line

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林宜悉 posted on 2020/03/27
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