Fraction

Fraction

A fraction is a number which is usually expressed in the form of \(\frac{a}{b}\). For examples ( \(\frac{3}{4}\), \(\frac{5}{3}\), \(\frac{9}{7}\), etc.)

Comparison of fraction

A fraction can be compared to their likes and unlike terms. We can compare like fractions by comparing their numerators and to compare unlike fractions, we should convert them into like fractions. By comparing those like fractions, as a result, we can find greater and the smaller fraction. For example, Let's compare \(\frac{5}{3}\) and \(\frac{7}{4}\)

Here, the L.C.M of denominators 3 and 4 = 3×4 = 12

Now, \(\frac{5}{3}\) = \(\frac{5×4}{3×4}\) = \(\frac{20}{12}\)

And, \(\frac{7×3}{4×3}\) = \(\frac{21}{12}\)

Here, \(\frac{21}{12}\) > \(\frac{20}{12}\), So, \(\frac{7}{3}\) > \(\frac{4}{3}\)

Addition and Substraction of Fraction

If the like fraction is given, we can add or substract them just by adding or substracting their numenator. For example, \(\frac{5}{6}\) + \(\frac{7}{6}\) = \(\frac{12}{6}\) = 2

\(\frac{10}{7}\) - \(\frac{9}{7}\) = \(\frac{10 - 9}{7}\) = \(\frac{1}{7}\) ans.

In case of unlike fraction, at first we should convert them into like fractions with the least common denominator, then we add or substract their numenator. For example,

or,\(\frac{4}{5}\) - \(\frac{3}{7}\) = \(\frac{4 × 7}{5 × 7}\) - \(\frac{3 × 5}{7 × 5}\)

= \(\frac{21}{35}\) - \(\frac{15}{35}\)

= \(\frac{21 -15}{35}\)

= \(\frac{6}{35}\) ans.

Multiplication of fraction

Multiplication of fraction can be done by the product of a whole number and a fraction as well as product of a two fraction. For example 3× \(\frac{4}{3}\)

\(\frac{3}{1}\) × \(\frac{4}{3}\) = \(\frac{12}{3}\) =4

\(\frac{1}{3}\) × \(\frac{6}{5}\) = \(\frac{1×6}{3×5}\) = \(\frac{6}{15}\) = \(\frac{2}{5}\) ans.

Division of fraction

To divide a whole number by a fraction, we should multiply the whole number by the reciprocal of the fraction. For example,

4÷ \(\frac{1}{6}\) = 4× \(\frac{1}{6}\) = \(\frac{4}{6}\) = \(\frac{2}{3}\) ans.

Things to remember

• To divide a whole number by a fraction, we should multiply the whole number by the reciprocal of the fraction.
• By comparing those like fractions, as a result, we can find greater and the smaller fraction. 

• It includes every relationship which established among the people.
• There can be more than one community in a society. Community smaller than society.
• It is a network of social relationships which cannot see or touched.
• common interests and common objectives are not necessary for society.

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