Page 103 - Start Up Mathematics_3

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Fractions

Anusha, finish your OK, mummy.
juice. You are still left But, what is
with one-third juice in one-third?
the glass.

Words like one-third, half,
etc. are known as fractions.
These words show that they
are a part of a whole.

When a number, group or thing is complete, we call it

whole.
A group of things or objects taken as one whole is called

a collection.
When we divide a whole thing or a collection of things
into parts, each part is known as a fraction of the whole
or collection.

We write fractions in numbers as number of parts selected .
total number of equal parts of the whole

For example, if a banana is divided into 7 equal parts, then each part is equal to 1 .
We read it as one-seventh. 7

We name a fraction by first writing the numerator followed by the ordinal name of the
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denominator. For example, is read as six-eighths, is read as two-ninths and so on.
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Example 1: Shruti bought a pizza. She cut it into 4 equal slices and gave 1 slice to
her friend Kriti. Represent Shruti’s and Kriti’s share of pizza in fractions.

Solution: The number of slices of pizza Shruti had = 3
Total number of slices of pizza = 4

So, Shruti’s share of pizza = 3
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