Question
Express the number $0.0000000000085$ in standard form.
✓
Answer
$0.0000000000085$
$= 0.0000000000085$ $\times\frac{10^{12}}{10^{12}}=8.5 \times 10^{-12}$
$= 0.0000000000085$ $\times\frac{10^{12}}{10^{12}}=8.5 \times 10^{-12}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Marble Game
Pramod is babysitting his little sister Monika and her two friends, Puja and Jyoti. Monika is wearing red, Puja is wearing blue and Jyoti is wearing green coloured clothes.
Pramod fills a bucket with 12 red (R) marbles. 8 blue (B) marbles and 4 green (G) marbles. He tells the giris that they will play a game. He will reach into the bucket and pull out a marble at random. The girl whose clothes match the colour of the marble scores 1 point.
(i) What is the probability of each girl scoring 1 point on the first draw?
Monika:
Puja:
Jyoti :
(ii) What is the probability of not drawing a green marble on the first draw?
(iii) If two marbles of each colour are added to the bucket, do the probabilities in part (a) change? Explain your answer.
(iv) If the number of each colour is doubled, do the probabilities in part (a) change? Explain why or why not.
Pramod is babysitting his little sister Monika and her two friends, Puja and Jyoti. Monika is wearing red, Puja is wearing blue and Jyoti is wearing green coloured clothes.
Pramod fills a bucket with 12 red (R) marbles. 8 blue (B) marbles and 4 green (G) marbles. He tells the giris that they will play a game. He will reach into the bucket and pull out a marble at random. The girl whose clothes match the colour of the marble scores 1 point.
(i) What is the probability of each girl scoring 1 point on the first draw?
Monika:
Puja:
Jyoti :
(ii) What is the probability of not drawing a green marble on the first draw?
(iii) If two marbles of each colour are added to the bucket, do the probabilities in part (a) change? Explain your answer.
(iv) If the number of each colour is doubled, do the probabilities in part (a) change? Explain why or why not.
Factorise the following.
$ y^2+4 y-21 $
→$ y^2+4 y-21 $
A garden has $2000$ trees. $12\%$ of these are mango trees, $18\%$ lamon and the rest are orange trees. Find the number of orange trees.
→The area of a square plot is $101 \frac{1}{400} \text{m}^2.$ Find the length of one side of the plot.
→Solve $0.44 t-1.05=2(0.71 t-0.01)+1.11$
→Express the following numbers in standard form: $0.00072984$
→Find the smallest square number that is divisible by each of the numbers 4, 9 and 10.
Expand:$ \left(x^2 y-y z^2\right)^2 $
→Find the $M.P.$ if $(i)$ $S.P. = Rs. 1222$ and Discount $= 6%$
→After the surface area of a cube is painted, the cube is cut into 64 smaller cubes of same dimensions (see the figure). How many have
(i) no face painted? $\qquad$ (ii) 1 face painted? $\qquad$
(iii) 2 faces painted? $\qquad$ (iv) 3 faces painted?
→(i) no face painted? $\qquad$ (ii) 1 face painted? $\qquad$
(iii) 2 faces painted? $\qquad$ (iv) 3 faces painted?