Math Help: How to Work Out a Fraction of a Number

You will need to divide 7/10 by 5 3/5.

Convert 5 3/5 into an improper fraction which is 28/5

Now work out 7/10 divide by 28/5 which is the same as 7/10 times.

The answer is 1/8.

Just divide 3.50 by 7 as 1/7 means divide by 7. This will give an anwer of 0.5.

Just multiply the fractions to work out the product.

3/9 times 5/8 is 15/72 or 5/24.

First work out 1% of 8.5 million by dividing 8.5 million by 100 to give 85,000.

Now multiply 85,000 by 3 to give 255,000.

On this one its probably best to convert 1 1/2 to a decimal which is 1.5

Now work out 1.5 times 63 which is 94.5.

One tenth of twenty is 2, and 2 times 2 is 4.

Follow the rule divide by the bottom and times by the top.

48 divided by 8 is 6, and 6 multiplied by 7 is 42.

So the answer is 42kg.

The rule divide by the bottom and times by the top must be applied in reverse, as the number in the question is needed.

First divided 36 by 3 to give 12, and then multiply 12 by 8 to give 96.

1% is 72 divided by 100 which is 0.72.

Now multiply 0.72 by 37.5 to give 27.

Just divide 6000 by 3 to find one-third of any number.

This will give you 2000.

Use the rule in the artice "divide by the bottom, and times by the top".

48 divided by 4 is 12, and 12 multiplied by 3 is 36.

She spent 5/8 on clothes if you add the two fractions together, so 3/8 are left over.

Just divide 28 by 7 to give 4.

Follow the rule divide by the denominator and multiply by the numerator.

48 divided by 12 gives 4, and 4 multiplied 3 gives 12.

Use the rule in the article in reverse.

Divide 60 by 3 to give 20, and now multiply 20 by 8 to give 160.

7/14 can be simplified to 1/2, so you just need to work out 1/2 of 14 which is 7.

1/4 is 9, and 3/4 is 27 (36 divided by 4 times 3).

Follow the rule divide by the bottom number and times by the top number.

200 divided by 5 is 40, and 40 times 4 is 160.

Follow the rule, "divide by the bottom and times by the top".

So 14 divided by 7 = 2, and 2 multiplied by 4 = 8.

Follow the rule divide by the bottom, and times by the top.

35 divided by 7 gives 5, and 5 multiplied by 5 gives 25.

Change 3/4 to a decimal to give 0.75.

Now work out 48 minus 0.75 to give 47.25.

There are 8/8 in a whole one, so altogether there will be 13 eighths.

To work out one ninth of a number divide the number by 9.

So 96 divided by 9 gives 10.7 (rounded to 1 decimal place).

You need to use the rule "divide by the bottom and times by the top". 63 divided by 7 = 9, and 9 multiplied by 4 is 36. Finally add the 36 on to the 63 to give 99.

To find 1/8 divide the number by 8.

6 divided by 8 gives 0.75.

Divide 100 by 7 to get 14.28. 14.28 multiplied by 5 is 71.4, rounded to 1 decimal place.

1/5 of a number can be found by dividing the number of 5.

Therefore, 7 divided by 5 gives 1.4

You can still use the rule divide by the bottom and times by the top even if your amount is a fraction.

Divide 4/5 by 8 to give 1/10, now multiply 1/10 by 5 to give 1/2.

Just multiply 49 by 9 to give 441.

1/8 of a number can be found by dividing the number by 8.

So 14 divided by 8 gives 1.75.

First work out 8% of 60 which is 4.8.

So one fifth of something is 4.8.

Since 1/5 means divide by 5, multiply 4.8 by 5 to find the missing number.

The asnwer will be 24.

40 divided by 8 is 5, and 5 multiplied by 5 is 25.

First work out 1/5 of the number by dividing by 5, so 30 divided by 5 is 6.

Now work out 4/5 by mutiplying the answer by 4, so 6 multiplied by 4 gives 24.

Use the method divide by the bottom and times by the top.

66 divided by 11 is 6, and 6 times 4 is 24.

Its probably easier to cancel 3/6 down to 1/2, so you need to work out one half of 248.

So 248 divided by 2 gives 124.

To work out 1/5 divide the number by 5.

8 divided by 5 is 1.6.

First divide 24 by to to give 12, and multiply 12 by 3 to give 36.

Now find 5/9 of 36, by dividing 36 by 9 to give 4, and multiplying 4 by 5 to give 20.

40 divided by 8 is 5, and 5 multiplied by 6 is 30.

Divide 182 by 13 to give 14, then multiply 14 by 9 to give 126.

4 can be written as a fraction as 4/1.

Now, multiply the two fractions together 1/7 times 4/1 = 4/7.

This is working out a fraction of an amount, so apply the rule "divide by the bottom and times by the top".

So 27 divided by 9 is 3, and 3 multiplied by 5 is 15.

Just multiply the numerators and denominators together of both fractions to give 4/25.

To find one sixth of something you divide by 6.

But since you have the answer already to the question, then multiply the 11 by 6 instead to give 66.

Multiply the numerator and denominator of 6/7 to give 12/14, so 3/14 is less than 6/7.

First work out 3 divide by 11 to give 0.27..., and 0.27... multiplied by 6 gives 1.64 to 2 decimal places.

You will need to apply the rule divide by top and multiply by the bottom.

96 divided by 3 is 32, and 32 times 4 is 128.

To work out 1/7 of a number divide the number by 7.

So 15000 divided by 7 gives 2142.86 rounded to decimal places.

Follow the rule divide by the bottom and multiply by the top.

12 divided by 5 is 2.4, and 2.4 times 4 is 9.6.

First make common denominators so the two fractions can be added together.

Multipliy the first fraction by 4 to give 12/56, and the second fraction by 7 to give 21/56.

Now add these fractions together to give 33/56.

First make the denominators the same by putting 30 on the bottom of both fractions.

S0 7/10 = 21/30, and 2/3 = 20/30

Now 21/30 - 20/30 is 1/30.

These numbers are 5 more than the square number sequence n^2 so the nth term is n^2 + 5.

To find one quarter of a number divide the number by 4.

So 1640 divided by 4 is 410.

Use the rule "divide by the bottom and times by the top"

128 divided by 8 gives 16.

16 multiplied by 3 gives 48.

Just multiply the 6 by 9 to give 54. So the number you are looking for is 54.

Divide 60 by 5 to give 12, then multiply 12 by 3 to give 36.

Follow the rule divide by the bottom and times by the top.

Convert the mixed number to an improper fraction which is 13/8.

Now work out 13/8 of 56 by using the rule divide by the bottom and times by the top.

56 divided by 8 is 7, and 13 times 7 is 91.

First work out 48 divided by 6 which is 8.

Now multiply 8 by 5 to give a final answer of 40.

Just divide 1/4 by 5/6 to give 3/10.

84 divided by 7 is 12, and 12 multiplied by 3 is 36.

Write 7 as a fraction as 7/1.

So work out 7/1 divided by 2/3.

Use the rule keep, flip and change to give 21/2.

"Of" means "multiply", so multiply the two fractions together to give 15/32.

Divide 24 by 3 to give 8, and 8 times 5 is 40.

First, find 1/7 by dividing by 7 to give 5.

Now find 6/7 by multiplying this answer by 6 to give 30.

Follow the rule divide by the bottom and times by the top.

66 divided by 6 is 11, and 11 multiplied by 5 is 55.

Apply the divide by the top, and times by the bottom as you need the number in the question.

36 divided by 2 is 18, and 18 times 9 is 162.

Just work out 2 divided by 11 using your calculator or by short division to give 0.181818...

Its easier in this case to just multiply the fractions together to give 35/20 which simplifies to 7/4.

You need to use the rule divide by the bottom and times by the top in reverse, as the number in the question is missing.

So instead divide by the top, and times by the bottom.

630 divided by 7 gives 90, and 90 multiplied by 10 gives 900.

9 divided by 3 is 3, and 3 multiplied by 8 is 24.

60 divided by 5 is 12, and 12 times 4 is 48.

First of all divide 1.8 by 6 to give 0.3.

Now 0.3 multiplied by ? gives 1.5.

Find ? by dividing 1.5 by 0.3 to give an answer of 5.

Put 6 on the numerator, and 15 on the denominator to give 6/15, which sipmplifies to 2/5.

The rule divide by the bottom and times by the top can still be used if the fraction is improper.

3.5 divided by 5 gives 0.7, and 0.7 multiplied by 7 gives 4.9.

Just simplify the fraction to its lowest terms by dividing the numerator and denominator by 6 to give 1/3.

Divide 11 by 6 to give 1.83..., so multiply 1.83... by 5 to give 9.17 to 2 decimal places (or 55/6).

Just divide the number by 5 when working out one fifth of a number.

The answer will be 13.

60 divided by 12 is 5, and 5 times 5 is 25.

84 divided by 7 gives 12, and 12 mulplited by 5 gives 60.

A quarter can be found by halving the number twice.

Half of 24 is 12, and half of 12 is 6.

Apply the rule divide by the bottom and times by the top.

11 divided by 3 gives 11/3.

11/3 multiplied by 2 gives 22/3 which as a mixed number is 7 1/3.

Work out 1% of 1200 by dividing 1200 by 100 to give 12.

Now multiply 12 by 1.75 to give 21.

Apply the rule divide by the bottom and times by the top.

420 divided by 5 is 84, and 84 times 4 is 336.

Fisrt work out 84 divided by 6 to give 14. Now multiply 14 by 5 to give 70.

Work out one eighth by dividing by 8 to give 4. Now multiply 4 by the 2 to give 8.

Alternatively, cancel 2/8 down to 1/4 and work out 1/4 of 32 to give 8 by dividing by 4.

The answer will be 4/11 (subtract the numerators and keep the denominator the same).

Write 14 as a fraction as 14/1. Now multiply the fractions together to give 14/8.

This can be simplified to 7/4 or 1.75.

To work out 1/3 you just need to divide your number by 3. So 5,280,000 divided by 3 is 1,760,000.

You need to use the rule divide by the top and times by the bottom, as you are after the original amount.

40 divided by 2 is 20, and 20 times 7 is 140.

First, divide 133 by the denominator of the fraction which is 7, to give 19, and then multiply 19 by the numerator (3), to get 57.

First of all convert 3 7/8 to an improper fraction which is 31/8.

Now apply the rule divide by the bottom and times by the top.

9 divided by 8 gives 1.125, and 1.125 multiplied by 31 gives 34.875.

To work out one third divide the number by 3.

40,000 divided by 3 gives 13,333.3 (to 1 decimal place)

It might be easier to convert 18.52 million to an ordinary number first, 18.52 million = 18,520,000. Now carry out short division, or another method, to give an answer of 9,260,000.

To work out one eigth of any number divide the number by 8. So 125 divided by 8 gives 15.625.

First divide by the denominator to give 24, now multiply 24 by the numerator to give 72.

The answer will be 1 too (1 divided by 1 is 1, and 1 times 1 is 1).

To answer this question convert 4% into a fraction and simplify.

4% means 4 out of 100 so the fraction is 4/100.

Now simplify 4/100 by dividing the numerator and denominator by 4.

This gives a final answer of 1/25.

To work out one-seventh of a number divide the number by 7.

So 77 divided by 7 is 11.

First divide 1200 by 4 to give 300. Now multiply 300 by 3 to give 900.

Now work out 3/4 of 900 by dividing by the bottom and multiplying by the top.

900 divided by 4 is 225, and 225 times 3 is 675.

To find 1/9 of a number divide the number by 9.

12 divided by 9 is 4/3 or 1.3 recurring.

42 divided by 8 is 5.25, and 5.25 times 3 is 15.75.

Follow the rule divide by the bottom and times by the top.

28 divided by 7 is 4, and 4 times 3 is 12.

First convert 0.25 to a fraction which is one quarter.

So you need to work out one quarter of 40.

Do this by dividing by 4, so the answer is 10.

60 divided by 5 is 12, and 12 multiplied by 3 gives 36.

Instead of following the rule "divide by the bottom and times by the top", do the inverse to this which is "divide by the top and times by the bottom".

So 49 divided by 7 is 7, and 7 multiplied 8 is 56.

48 divide by 8 is 6, and 6 multiplied by 5 is 30.

Follow the rule divide by the bottom and times by the top.

144 divided by 8 is 18, and 18 times 7 is 126.

Now work out the difference between 126 and 96 which is 30.

The rule will have to be done in reverse, so "divide by the top and times by bottom".

20 divided by 4 gives 5, and 7 multiplied by 5 gives 35.

The answer can be checked using the normal rule.

It's probably best to convert 1 1/2 to 1.5, and then work out 1.5 multiplied by 60 to give 90.

First round 48 to the nearest multiple of 7 which is 49.

Now work out 4/7 of 49.

49 divided by 7 is 7, and 7 times 4 is 28.

So the answer will be about 28.

72 divided by 9 gives 8, and 8 multiplied by 5 gives 40.

To find one ninth of any number just divide by 9, so the answer is 6.7 rounded to 1 decimal place.

First, divide 27 by 3 to give 9, and then multiply 9 by 4 to give 36.

Divide 42 by 2 give 21, and then multiply 21 by 9 to give 189.

To work out 1/8 of any number divide the number by 8.

48 divided by 8 is 6.

So there are 6 bottles of water.

18 divided by 9 is 2, and 2 times 6 is 12.

Follow the rule divide by the bottom and times by the top.

Use the rule divide by the bottom and times by the top.

60 divided by 4 is 15, and 15 multiplied by 3 is 45.

91 divided by 7 is 13, and 13 times 4 is 52.

Use the rule divide by the bottom and times by the top.

63 divided by 9 gives 7, and 7 times by 4 gives 28L.

Follow the rule divide by the bottom and times by the top.

6 divided by 3 is 2, and 2 times 2 is 4.

You will need to work out 40 divided by 7, and then times the answer by 5.

This will give an answer of 28.6 rounded to 1 decimal place.

This is the same as working out 5/8 of 128.

Do this by dividing by the bottom numbers, and multiplying by the top number.

So 128 divided by 8 is 16, 16 times 5 is 80.

This is the same as working out 3/8 multiplied by 2/5 as of means multiply.

So 3/8 times 2/5 is 6/40 or 3/20.

Its easier just to multiply the fractions here, as the word of can also mean multiply.

1/7 multiplied by 1/14 is 1/98.

"Divide by the bottom and times by the top"

90 divided by 6 is 15, and 15 times 5 is 75.

Just divide 60 by 12 to give 5.

Just divide 7 by 7 to give 1.

12 divided by 3 is 4, and 4 times 8 is 32.

Just add the numerators and keep the denominators the same to give 7/5, which can be converted to 1 2/5.

Follow the rule divide by the bottom and times by the top.

24 divided by 8 is 3, and 3 times 3 is 9.

Work out 140 divided by 10 to give 14, and then times 14 by 4 to give 56.

To work out one seventh of any number divide by 7. So 14 divided by 7 is 2.

Divide 72 by 3 to give 24, as 1/3 means divide by 3.

Apply the rule divide by the bottom and times by the top.

160 divided by 6 is 26.7 rounded to 1 decimal place.

To find 1/4 of any number divide the number by 4 to give 80.

To find one quarter of a number divide by 4, so 80 divided by 4 is 20.

Times means of, so you need to work out 2/9 of 45.

45 divided by 9 is 5, and 5 times 2 is 10.

To work out 1/3 divide the number by 3, so 8/3 = 2.6 recurring.

10 divided by 2 is 5, and 5 times 3 is 15.

4 divided by 7 is 0.57... and 0.57 multiplied by 5 gives 2.86 rounded to 2 decimal places.

Write 12 on the numerator of the fraction, and 48 on the denominator of the fraction.

Next cancel the fraction down by dividing the numerator and denominator by 12 to give 1/4.

Just multiply 4 by 8 to give 32.

Follow the rule divide by the bottom and times by the top.

240 divided by 6 is 40, and 40 times 5 is 200.

Follow the rule divide by the bottom and times by the top.

14 divided by 11 is 1.27..., and 1.27... multiplied by 7 gives 8.91 (rounded to 2dp)

You need to figure out 100%. So work out 1% by dividing 18 by 77, and multiply the answer by 100 to give 23.38 to 2 decimal places.

Follow the rule divide by the bottom and times by the top.

240 divided by 6 gives 40, and 40 times 5 is 200.

So Mohammed got £200.

Convert 1 1/4 to an improper fraction to give 5/4.

Now work out 5/4 of 96.

96 divided by 4 is 24, and 24 times 5 is 120.

First, work out 1/11 by dividing 176 by 11 to give 16.

Now, multiply 16 by 5 to give 80.

Yes the method you are using is correct.

Work out 5 divided by 8 on a calculator or use a short division method.

The answer should be 0.625.

Divide 60 by 5 to give 12, and 12 times by 2 is 24.

To work out 1/4 of any number divide the number by 4.

£15.10 divided by 4 is £3.775, or £3.78 to the neared penny.

Just divide 50.25 by 67 to give 0.75, and 0.75 as a fraction is 3/4.

Follow the rule divide by the bottom and times by the top.

20 divided by 8 is 2.5, and 2.5 multiplied by 2 is 5.

24 divided by 4 is 6, and 6 multiplied by 3 is 18.

First cancel 12/15 to 4/5.

Now work out 7 divided by 5 to give 1.4, and then 1.4 times 4 to give 5.6.

40 divided by 8 is 5. and 5 multiplied by 2 is 10.

42 shared by 7 is 6, and 6 times 6 is 36.

Its easier just to multiply the fractions together as of means times (1/5 times 5/10 is 5/50).

5/50 can be simplified to 1/10.

72 divided by 8 is 9, and 9 times 3 is 27.

First convert them to improper fraction (5/2 + 14/3 + 11/6).

Now make a common denominator of 6 (15/6 + 28/6 + 11/6).

Next add them up to give 54/6 which is the same as 9.

First work out 3/8 of 40 by doing 40 divided by 8 to give 5, and 5 times 3 is 15.

Now subtract 15 from 40 to give 25.

You need to divide by the numerator and multiply by the denominator as you need the number in the question.

30 divided by 5 is 6, and 6 times 8 is 48.

72 divided by 9 is 8, and 8 times 5 is 40.

To find one eigth of a number divide by 8, but since the answer is given multiply by 8 instead.

11 multiplied by 8 is 88.

Apply the rule divide by the bottom and times by the top.

36 divided by 9 is 4, and 4 times 7 is 28.

40 divided by 8 is 5, and 5 multiplied by 5 is 25.

Use the rule divide by the bottom and times by the top.

14 divided by 7 is 2, and 2 multiplied by 3 is 6.

First divide 1280 by 4 to give 320, and multiply 320 by 5 to give 1600.

176 divided by 11 is 16, and 16 times 5 is 80.

You need to use the rule divide by the top and multiply by the bottom.

42 divided by 2 is 21, and 21 multiplied by 5 is 105.

Apply the rule divide by the bottom and times by the top.

30 divided by 10 is 3, and 3 times 7 is 21.

36 divided by 2 is 18, and 18 multiplied by 5 is 90.

7 divided by 7 is 1, and 1 times 5 is 5.

10/12 of the drink will be water which simplifies to 5/6.

1% is 840 divided by 100 to give 8.4.

Next multiply 8.4 by 6.5 to give 54.6.

First work out 1/3 of 90 by dividing by 3 to give 30.

So 2/3 of something is 30.

To work this out divide 30 by 2 which is 15, and then times 15 by 3 to give 45.

Follow the rule divide by the bottom and times by the top.

70 divided by 10 is 7, and 7 times 3 is 21.

Just divide 499 by 8 to give 62.375.

Divide 728 by 8 to give 91, and then multiply 91 by 7 to give 637.

72 divided by 12 is 6, and 6 times 5 is 30.

4.8 divided by 8 is 0.6, and 0.6 times 3 is 1.8.

You need to follow the rule divide by the top, and multiply by the bottom.

8 divided by 4 is 2, and 2 times 5 is 10.

So the number is 10.

To work out 1/5 of any number divide the number by 5.

So 240 divided by 5 is 48.

First divide 9 by 3 (the numerator) to give 3.

Next multiply 3 by 8 (the denominator) to give 24.

So the number is 24.

You can check the answer by working out 3/8 of 24.

Start at the end, 3/7 of 84 is 36.

Then 2/9 of 36 is 8.

Then 1/4 of 8 is 2.

Finally 1/2 of 2 is 1.

7 divided by 3 is 2.333... and 2.333 times 2 is 4.666... (or 4.7 to 1 decimal place).

Just divide 70 by 14 to give 5.

155 divided by 5 is 31, and 31 times 3 is 93.

Put 42 on the numerator and 70 on the denominator of the fraction to give 42/70.

Since 42 and 70 are both multiples of 7, divide 42 and 70 to give 6/10.

6 and 10 are both multiples of 2, so divide by 2 to give 3/5.

To find one twelfth of any number just divide the number by 12.

200 divided by 12 is 16.7.

1% is 40 divide by 100 which is 0.4.

Now multiply 0.4 by 6.25 to give 2.5.

To find the number multiply 20 by 7 to give 140.

Follow the method divide by the denominator and times by the numerator.

56 divided by 5 is 11.2, and 11.2 times 3 is 33.6

First divide 1.5 by 3 to give 0.5, and then 0.5 times 4 is 2 (apply the rule in the article byt in reverse).

Divide 27 by 3 to give 9, and multiply 9 by 8 to give 72.

So there are 72 pages in the whole book.

Add 8 and 6 together to give 14.

Now divide 140 by 14 to give 10.

Now multiply 10 by 8 and 6 to give 80mg and 60mg.