Fraction as a Part of Collection

How to find fraction as a part of collection?

Let there be 14 rectangles forming a box or rectangle.

Pictures of Fraction

Thus, it can be said that there is a collection of 14 rectangles, 2 rectangles in each row.

If it is folded into two halves, each half will have 7 rectangles. So, we can say one-half of 14 is 7.

Similarly, one- half of 8 is 4 and one-half of 16 is 8.

Image of Fraction




One-half of 8 squares = 4

Thus, 1/2 = 4/8

That is, out of two equal parts, one part is 1.

Out of two equal parts of 8 one part is 4

Fraction

One-half of a collection of 8 cups = 4 cups

Thus, 1/2 = 4/8

1 and 4 are numerators

2 and 8 are denominators

The denominator or bottom number of a fraction is the number of equal parts of a whole or a collection. The numerator or top number of a fraction means how many equal parts of a whole or a collection is considered.

3/5, 7/8, 2/3, 5/12, 7/16, 11/25, 6/15 are all fractions.

The top numbers of these fractions are 3, 7, 2, 5, 7, 11 and 6. These numbers are called top numbers or numerators of the related fractions.

The bottom numbers of these fractions are 5, 8, 3, 12, 16, 25 and 15. These numbers are called bottom numbers or denominators of the related fractions.

If we have 2 bananas in a basket counting 7 fruits. How many fruits have we in our whole set? How many bananas have we in our whole set?

Fraction as a Part of Collection

We have 2 bananas out of 7 fruits which can be written as \(\frac{2}{7}\).

In the figure below, the strip has been divided in 8 equal parts. 3 parts of the strip are shaded. The shaded part represents three-eight of the strip. We write this as \(\frac{3}{8}\).

3 by 8

Number of unshaded parts are 5. Therefore, the unshaded part represents five-eight of this strip. We write this as \(\frac{5}{8}\).

In the fraction \(\frac{3}{8}\), 3 represents the shaded part of the collection and the 8 represents the total number of parts. 3 is numerator and 8 is denominator of this fraction \(\frac{3}{8}\).

Numerator and Denominator

A fraction is made up of two parts-numerator and denominator. The numerator is written above the denominator separated by a short line.


Fractions also refer part of the whole collection or group.

Look at the picture-

It is a collection of 3 flowers.

How many are blue?

2 out of the 3 flowers are blue.

\(\frac{2}{3}\)     \(\frac{\textrm{Blue Flowers (Part of Collection)}}{\textrm{Total Flowers (The Whole Collection)}}\)

\(\frac{2}{3}\)  of the flowers are blue.


Fraction as a Part of Collection
Fraction as a Part of Collection

     There are four cars in all.

     3 cars are blue, 1 car is red.

     So, we can say -

     \(\frac{1}{4}\) car is red and \(\frac{3}{4}\) cars are blue

The figure given below is a collection of 6 circles. Draw a dotted line to divide the collection into two equal parts. Then, each part represents 3 circles. Also, each part contains 1/2

Hence 1/2 of 6 =3.

The figure given below is a collection of 8 circles.

Draw dotted lines to divide the collection into 4 equal parts.

Now, each part represents 1/4. Also, each part contains 2 circles.

Hence, 1/4 of 8 = 2.

The figure alongside contains 12 circles.

Draw dotted lines to divide the collection into 3 equal parts.

Then each part represents 1/3.

Also, each part contains 4 circles.

Hence, 1/3 of 12 =4.

2 parts of the collection represent 2/3.

Also, 2 parts contain 8 circles.

Hence, 2/3 of 12 = 8.



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Related Concepts

Fraction as a Part of a Whole

Greater or Smaller Fraction

Convert a Fraction to an Equivalent Fraction

Verify Equivalent Fractions

Proper Fraction and Improper Fraction



3rd Grade Math Worksheets

3rd Grade Math Lessons

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