divide fractions word problems

[cloe]

you have 15 2/9 of a substance and divide it into vials of 5 1/3 each estimate how many can you fill by rounding to the nearest whole number

 

[rexmorgan]

Another Example

Lets say you have 20 1/4 ounces of a liquid and it is to be divided equally into 4 1/3 vials. You problem asks you to estimate. The first step is to estimate or round your variables.

20 1/4 ounces becomes 20.
4 1/3 becomes 4.

Now is is as simple as dividing 20/4

4 will go into 20, 5 times.

 

[cloe]

Lets say you have 20 1/4 ounces of a liquid and it is to be divided equally into 4 1/3 vials. You problem asks you to estimate. The first step is to estimate or round your variables.

20 1/4 ounces becomes 20.
4 1/3 becomes 4.

Now is is as simple as dividing 20/4

4 will go into 20, 5 times.

I want to thank you for your replay this help me so much. I do have one question on rounding , fraction how do you know which way to round up or down

 

[Mrspi]

I want to thank you for your replay this help me so much. I do have one question on rounding , fraction how do you know which way to round up or down

If the "fraction part" is more than 1/2, you'd generally round UP to the next whole number. For example, if you had 3 7/8, 7/8 is more than 1/2 (it helps if you realize that 1/2 is the same thing as 4/8), so this number is closer to 4 than it is to 3.

If the "fraction part" is less than 1/2, you'd just drop the fraction part to get the nearest whole number. For example, suppose you have 5 1/4. Since 1/4 is smaller than 1/2, you'd just drop the fraction and say that this is close to 5 (the nearest whole number).

 

[cloe]

If the "fraction part" is more than 1/2, you'd generally round UP to the next whole number. For example, if you had 3 7/8, 7/8 is more than 1/2 (it helps if you realize that 1/2 is the same thing as 4/8), so this number is closer to 4 than it is to 3.

If the "fraction part" is less than 1/2, you'd just drop the fraction part to get the nearest whole number. For example, suppose you have 5 1/4. Since 1/4 is smaller than 1/2, you'd just drop the fraction and say that this is close to 5 (the nearest whole number).

I wont to thank you guys again this is a great help. My daughter did her practice work sheet and she got them all right.

She will be getting more practice she got 70 objective that she will have to know by the end of the year. So if I dont understand I will be asking again.

 

[cloe]

Lets say you have 20 1/4 ounces of a liquid and it is to be divided equally into 4 1/3 vials. You problem asks you to estimate. The first step is to estimate or round your variables.

20 1/4 ounces becomes 20.
4 1/3 becomes 4.

Now is is as simple as dividing 20/4

4 will go into 20, 5 times.

I would like to thank you my daughter did her practice sheet and she got them all right. Now not only doe she understand i do to Thanks again

 

[cloe]

The simplest and most common form of rounding is this:

Let's define the digit with the smallest place value that you want to keep as the target digit.
Let's define the trailing digits as all digits to the right of the target digit.
Let's define the crucial digit as the first (or leftmost) trailing digit.

The most common method of rounding is this: if the crucial digit is NOT LESS than 5, you add 1 to the target digit and ignore the trailing digits to get a rounded answer, but if the crucial digit IS LESS than 5, you just ignore the trailing digits to get a rounded answer.

Example 1. Round the number below to tenths.

21.161909. The target digit is 1. The trailing digits are 61909. The crucial digit is 6, which is not less than 5. So add 1 to the target digit and ignore the trailing digits. Thus, the number rounded to tenths is 21.2. The common sense of it is that the number is closer to 21.2 than it is to 21.1.

Example 2. Round the same number to hundredths.

Now the target digit is 6 and the trailing digits are 1909. The crucial digit is 1, which is less than 5. So just ignore the trailing digits. Thus, the number rounded to hundredths is 21.16. The common sense of it is that the number is closer to 21.16 than it is to 21.17.

Example 3. Round 1.999512 to thousandths.

The crucial digit is 5 and the target digit is 9. When you add 1 to 9, you get 10. Remember to carry any 1's generated. The rounded number is 2.000. The common sense is that the number is closer to 2.000 than it is to 1.999.

I must warn you, however, that there are more sophisticated methods of rounding. I think you said that your daughter is in third grade so I doubt that they are teaching her one of those methods, but if they are, please come back and we can explain whatever method they are teaching her.

Does this help?

Edit: My post goes way beyond rounding mixed numbers to whole numbers. If that is all you need to know, you can disregard this entire post. By the way, people round whole numbers too. That is, 88 rounded to the tens place is 90. Rounding is just a way to get numbers that are close to accurate but easy to work with and understand.

Yes this does help a lot I appreciated all of you help & I would like to thank you my daughter did her practice sheet and she got them all right. Now not only does she understand i do to Thanks again

 

[cloe]

Usual way of rounding is:
1: stay where yor are if digit following decimal point is 0 to 4 : like 32.3 = 32
2: go one up if 5 to 9 : like 32.7 = 33

Always a good idea to use google; a search on "introduction to rounding"
gives you loads of sites, like this one:
http://bdaugherty.tripod.com/KeySkills/rounding.html

I would like to thank you my daughter did her practice sheet and she got them all right. Now not only does she understand i do to Thanks again I appriciated the help you gave me and thanks for the information on the websites

 

[cloe]

Usual way of rounding is:
1: stay where yor are if digit following decimal point is 0 to 4 : like 32.3 = 32
2: go one up if 5 to 9 : like 32.7 = 33

Always a good idea to use google; a search on "introduction to rounding"
gives you loads of sites, like this one:
http://bdaugherty.tripod.com/KeySkills/rounding.html

I would like to thank you my daughter did her practice sheet and she got them all right. Now not only does she understand i do to Thanks again I appreciated the information on the web site for rounding and your help