Question

express the following number in standard form i)144 ii)120​

Answer 1

$\underline{\pink{Scientific \: notation:}}$

Very large or very small numbers can be expressed in the simplest form by using scientific notation.

In this notation any number can be written as the product of a number 'x' such that

1 ≤ x < 10 and a power of 10.

$\red{i) Given \: number \: 144 }$

$Standard \:form \: of \: 144$

$= 144 \times \frac{100}{100}$

$= \frac{144}{100} \times 10^{2}$

$= 1.44 \times 10^{2}$

Therefore.,

$\red{Standard \:form \: of \: 144}$

$\green { = 1.44 \times 10^{2} }$

$\red{ ii) Given \: number \: 120}$

$Standard \:form \: of \: 120$

$= 120 \times \frac{100}{100}$

$= \frac{120}{100} \times 10^{2}$

$= 1.2 \times 10^{2}$

Therefore.,

$\red{Standard \:form \: of \: 120}$

$\green { = 1.2 \times 10^{2} }$

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