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Visually dividing a whole number by a decimal

This video is all about understanding how to divide whole numbers by decimals. It emphasizes the concept of partitioning whole numbers into equal groups of a certain decimal value, and counting how many of those groups we can make.

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• um.. when sal does it his way it makes sense but isn't the answer always supposed to be less than the thing u r dividing?
• If you are working only with whole numbers, that is correct. If you are dividing by less than a whole number, the answer will be greater than the thing you are dividing.
• How to multiply whole numbers by fractions?
• Turn the fraction into a decimal or multiply whole number by the numerator
• this is really helpful if you just started this.
• Ten form divicion
• - [Instructor] In this video, we're going to see
if we can compute what three divided by 0.75 is equal to,
and I'll give you a little bit of a hint
before I tell you to pause the video.
So let's imagine three wholes right over here,
and what if we were to think of these three wholes,
these three ones, and what if we were to
think about them in terms of hundredths?
Well then we could, once we express these as hundredths,
we could say, well how many groups of 75 hundredths
• Im so braindead,i don't know if its me or im not getting what hes saying
• Never adopt that type of self-talk as it will only ever hurt you.

Secondly, 3 ÷ 0.75 is asking how many equal groups of 0.75 out of 3 can we make. 3 = 300 hundredths (300/100) and 0.75 = 75 hundredths (75/100). When thinking of the question like that you can imagine it as being 300 ÷ 75, which is the same thing as how many equal groups of 75 are in 300.
• How does this even work? I have been stuck and rewatching this video multiple times.
(1 vote)
• Look, it’s pretty simple. Think of three as three hundredths. Now divide three hundredths into 75 hundredths. What did you get? That’s right, it’s 4. You don’t need to draw pictures for this.
• isnt it supposed to be 0.25?? how is it 4 if were dividing and 4 is greater than 3 and 0.75??