Find the Fraction of a Quantity

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Pre - Algebra

Fractions

Fraction of a Quantity

Find the Fraction of a Quantity

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Question 1 of 6

What is

\frac{1}{5}

$1/5$ of

20

$20$ cows?

(4) cows

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To get a fraction of a quantity, simply multiply the fraction to the quantity.

	$\frac{1}{5}$ $1/5$ $\times$ $xx$ $20$ $20$

$=$ $=$	$\frac{1}{5} \times \frac{20}{1}$ $1/5xx20/1$

$=$ $=$	$\frac{1}{5\div\color{#CC0000}{5}}\times\frac{20\div\color{#CC0000}{5}}{1}$	$5$ $5$ and $20$ $20$ are multiples of $5$ $5$

$=$ $=$	$\frac{1}{1} \times \frac{4}{1}$ $1/1xx4/1$

$=$ $=$	$\frac{4}{1}$ $4/1$

$=$ $=$	$4$ $4$ cows

4

$4$ cows

Question 2 of 6

2. Question
What is $\frac{2}{9}$ $2/9$ of $18$ $18$ cupcakes?
- (4) cupcakes
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To get a fraction of a quantity, simply multiply the fraction to the quantity.

$\frac{2}{9}$ $2/9$ $\times$ $xx$ $18$ $18$

$=$ $=$ $\frac{2}{9} \times \frac{18}{1}$ $2/9xx18/1$

$=$ $=$ $\frac{36}{9}$ $36/9$

$=$ $=$ $4$ $4$ cupcakes

$4$ $4$ cupcakes

Question 3 of 6

What is

\frac{3}{15}

$3/15$ of

$ 200

$$200$ ?

$$$ $$$ (40)

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To get a fraction of a quantity, simply multiply the fraction to the quantity.

	$\frac{3}{15}$ $3/15$ $\times$ $xx$ $200$ $200$

$=$ $=$	$\frac{3}{15} \times \frac{200}{1}$ $3/15xx200/1$

$=$ $=$	$\frac{3}{15\div\color{#CC0000}{5}}\times\frac{200\div\color{#CC0000}{5}}{1}$	$15$ $15$ and $200$ $200$ are multiples of $5$ $5$

$=$ $=$	$\frac{3}{3} \times \frac{40}{1}$ $3/3xx40/1$

$=$ $=$	$\frac{120}{3}$ $120/3$

$=$ $=$	$40$ $40$ dollars

$ 40

$$40$

Question 4 of 6

What is

\frac{7}{8}

$7/8$ of

720

$720$ mL?

(630) mL

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To get a fraction of a quantity, simply multiply the fraction to the quantity.

	$\frac{7}{8}$ $7/8$ $\times$ $xx$ $720$ $720$

$=$ $=$	$\frac{7}{8} \times \frac{720}{1}$ $7/8xx720/1$

$=$ $=$	$\frac{7}{8\div\color{#CC0000}{8}}\times\frac{720\div\color{#CC0000}{8}}{1}$	$8$ $8$ and $720$ $720$ are multiples of $8$ $8$

$=$ $=$	$\frac{7}{1} \times \frac{90}{1}$ $7/1xx90/1$

$=$ $=$	$\frac{630}{1}$ $630/1$

$=$ $=$	$630$ $630$ mL

630

$630$ mL

Question 5 of 6

What is

\frac{5}{9}

$5/9$ of

81

$81$ cm?

(45) cm

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To get a fraction of a quantity, simply multiply the fraction to the quantity.

	$\frac{5}{9}$ $5/9$ $\times$ $xx$ $81$ $81$

$=$ $=$	$\frac{5}{9} \times \frac{81}{1}$ $5/9xx81/1$

$=$ $=$	$\frac{5}{9\div\color{#CC0000}{9}}\times\frac{81\div\color{#CC0000}{9}}{1}$	$9$ $9$ and $81$ $81$ are multiples of $9$ $9$

$=$ $=$	$\frac{5}{1} \times \frac{9}{1}$ $5/1xx9/1$

$=$ $=$	$\frac{45}{1}$ $45/1$

$=$ $=$	$45$ $45$ cm

45

$45$ cm

Question 6 of 6

What is

\frac{3}{8}

$3/8$ of

24

$24$ chickens?

(9) chickens

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To get a fraction of a quantity, simply multiply the fraction to the quantity.

	$\frac{3}{8}$ $3/8$ $\times$ $xx$ $24$ $24$

$=$ $=$	$\frac{3}{8} \times \frac{24}{1}$ $3/8xx24/1$

$=$ $=$	$\frac{3}{8\div\color{#CC0000}{8}}\times\frac{24\div\color{#CC0000}{8}}{1}$	$8$ $8$ and $24$ $24$ are multiples of $8$ $8$

$=$ $=$	$\frac{3}{1} \times \frac{3}{1}$ $3/1xx3/1$

$=$ $=$	$\frac{9}{1}$ $9/1$

$=$ $=$	$9$ $9$ chickens

9

$9$ chickens

Find the Fraction of a Quantity

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Quiz summary

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2. Question

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3. Question

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Quizzes

		$\frac{2}{9}$ $2/9$ $\times$ $xx$ $18$ $18$

	$=$ $=$	$\frac{2}{9} \times \frac{18}{1}$ $2/9xx18/1$

	$=$ $=$	$\frac{36}{9}$ $36/9$

	$=$ $=$	$4$ $4$ cupcakes