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Exponents — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsExponents2 Marks
Question
Write the following numbers in usual form:
$4.129 \times 10^{-3}$
✓

Answer

$4.129\times10^{-3}$
$=\frac{4129}{1000}\times\frac{1}{10^{3}}$
$=\frac{4129}{10^3\times10^3}$
$=\frac{4129}{10^{(3+3)}}$
$=\frac{4129}{10^6}$
$=\frac{4129}{1000000}$
$=0.004129$

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