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Exponents and Powers — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSExponents and Powers1 Mark
MCQ
The standard form of the number $12345$ is:
  • A
    $1234.5 × 10^1$
  • B
    $123.45 × 10^2$
  • C
    $12.345 × 10^3$
  • ✓
    $1.2345 × 10^4$
✓

Answer

Correct option: D.
$1.2345 × 10^4$
A number in standard form is written as $a × 10^k,$ where a is a terminating decimal such that $1 ≤ a ≤ 10$ and k is any integer.
So, $12345$
$= 1.2345 \times 10^4$

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