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  • - [Instructor] We are asked what is the height

  • of the sunflower?

  • So pause this video and think about it.

  • All right, so let's see.

  • The bottom of the sunflower is right aligned

  • with the bottom of the ruler,

  • so there ruler's in the right place.

  • And let's see, the sunflower goes

  • all the way up to this point right over here.

  • So this is one, two, three, four, five,

  • and then a little bit more.

  • So we're going to get into a fraction.

  • So what is this extra amount?

  • So if we can see the space between five

  • and six is divided into four equal sections.

  • So we have, one, two, three, four.

  • Or we could see it here.

  • They've divided it with these little hash marks

  • into one, two, three, four equal sections.

  • And this goes one of those four equal sections

  • towards six, so this is 5 1/4 feet.

  • That's how tall the sunflower is.

  • All right, let's do another example.

  • So here we are told, or we are asked,

  • which pencil measures 2 3/4 of an inch?

  • So pause this video and try to think about it.

  • All right, so we go one inch, two inches,

  • and then we have to think about how far

  • between two and three is 3/4?

  • So to think about 3/4, we have

  • to divide the part, or the part of this ruler,

  • between two and three into four equal sections.

  • So let's see.

  • If I were to just split it like this,

  • that's two equal sections.

  • So if I were to take each

  • of those two equals sections

  • and then split them, now that's four equal sections.

  • Notice one, two, three, four equal sections.

  • So when we're thinking about 3/4,

  • we wanna go three of those four equal sections.

  • One, two, three.

  • And so you can see right over here,

  • that is 2 3/4.

  • This is 2 3/4 right over here.

  • And that is pencil A.

- [Instructor] We are asked what is the height

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A2 初級

最寄りの1/4に長さを測定する (Measure lengths to nearest 1/4)

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    林宜悉 に公開 2021 年 01 月 14 日
動画の中の単語