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Exponents — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSExponents1 Mark
Question
Fill in the blank.
$0.0000123$ written in standard form is __________.
✓

Answer

$0.0000123$ written in standard form is $1.23 × 10^{-5}$.
Solution:
$0.0000123$
$=\frac{123}{10000000}$
$=\frac{123}{10^7}$
$=\frac{1.23\times100}{10^7}$
$=\frac{1.23\times10^2}{10^7}$
$=1.23\times10^{(2-7)}$
$=1.23\times10^{-5}$

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