Download App

Exponents and Powers — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSExponents and Powers1 Mark
MCQ
Write $0.00000000256$ in standard form:
  • A
    $2.56 \times 10^{-11}$
  • B
    $2.56 \times 10^{-10}$
  • C
    $2.56 \times 10^{-8}$
  • ✓
    $2.56 \times 10^{-9}$
✓

Answer

Correct option: D.
$2.56 \times 10^{-9}$
D.  $2.56 \times 10^{-9}$
Solution:
$0.00000000256 =\frac{256}{100000000000}$
$=\frac{2.56\times100}{100000000000}$
$=\frac{2.56}{100000000000}$
$=2.56\times10^{-9}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 Marks Each]" from Exponents and Powers→Exponents and Powers — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Mark againts the correct answer in the following: A can finish a piece of work in $12$ hours while $B$ can finish it in $15$ hours. How long will both take to finish it, working together?
→
A square board has an area of 121 sq units. How long is each side of the board?
→
The four angles of a pentagon are $40^\circ , 75^\circ , 125^\circ and 135^\circ .$ The measure of the fifth angle is:
→
Amrit and Pankaj expanded $(x - 5)^2.$ Amrit's answer is $x^2 - 25$ and Pankaj's answer is $x^2 -10x + 25.$ Which of the following statements is correct?
→
Tick the correct answer in the following$?$ How many diagonals are there in a pentagon$?$
→
The sum of $(6 a+4 b-c+3),(2 b-3 c+4),(11 b-7 a+2 c-1)$ and $(2 c-5 a-6)$ is
→
The factorisation $1+16 x+64 x^{2}$ is
→
Which of the following numbers is divisible by $99:$
→
Find the reciprocal of $-2.$
→
Mark $(\checkmark)$ against the correct answer: $3 + 23x - 8x^2 =\  ?$
→