What is an Exponent — lesson. Mathematics CBSE, Class 7.

PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo

An exponent is a small number written above and to the right of the base number, tells how many times the base number is being multiplied.

The base a raised to the power of n is equal to the multiplication of a, n times:

$a \cdot a \cdot a \cdot ... \cdot a$

$=$

$a^{n}$ .

$a$ is the base and

$n$ is the exponent.

Powers in an algebraic expression:

In an algebraic expression, we normally use the “

$x$ to the power

$3$ ” that is

$x^{3}$ . Here, the base is

$x$ , and the exponent is

$3$ . It means that

$x$ is being multiplied by itself

$3$ times:

$x^{3} = x \times x \times x$ .

For example, “5 to the power 4” may be written as

$5^{4}$ . Here, the base number is

$5$ , and the exponent is

$4$ . It means that

$5$ is being multiplied by itself

$4$ times:

$5^{4} = 5 \times 5 \times 5 \times 5$

Where,

$5^{4} = 5 \times 5 \times 5 \times 5$ or

$5^{4}$ = 625

Example:

$\begin{array}{l} 5^{1} = 5 \\ 5^{2} = 3 \cdot 3 = 25 \\ 5^{3} = 5 \cdot 5 \cdot 5 = 125 \\ 5^{4} = 5 \cdot 5 \cdot 5 \cdot 5 = 625 \\ 5^{5} = 5 \cdot 5 \cdot 5 \cdot 5 \cdot 5 = 3125 \end{array}$

$1$

Previous theory

Exit to the topic

Next theory

Send feedback

Did you find an error?

Send it to us!

6. What is an Exponent

Theory: