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## 5th grade

### Unit 9: Lesson 4

Divide whole numbers by decimals- Visually dividing a whole number by a decimal
- Dividing a whole number by a decimal on a number line
- Division strategies for decimal quotients
- Divide whole numbers by decimals visually
- Pattern when dividing by tenths and hundredths
- Divide whole numbers by 0.1 or 0.01
- Dividing whole numbers by decimals examples
- Divide whole numbers by decimals
- Divide decimals: FAQ

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

CCSS.Math:

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## Want to join the conversation?

- This is so confusing I don't get any of this my mom can teach it to me and I get it!(10 votes)
- 1:53this is the part I have waiting for(6 votes)
- Hey, do you like deez nuts meme? Just wanna know if you do, not trolling.(5 votes)
- What if it doesn't land on 2?(2 votes)
- It should always match your dividend (the number you're dividing). So, in this case, it should end at 2.(4 votes)

- Bro my teacher assigned me so much to do its impossible to do it in time like bro paper is more fun than this sugar booger diaper wiaper poopy dinosaur like gurl chill out I have like 2 million lessons every second like I need more time to do this wanka chanka lonka ponka(3 votes)
- 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.(2 votes)
- how do they make this stuff(1 vote)
- I think they're using scrips. Like in the movies...(2 votes)

- This is easy but how do you do it in a more complicated matter(1 vote)
- what doin is that guy a worker at khan acadamey(1 vote)

## Video transcript

- [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.