Expressing Numbers in Standard Form

Q.

Express the number appearing in the following statement in standard form:

The distance between Earth and Moon is $384,000,000m$.

Q. Question 3(v)
Express the number appearing in the following statements in standard form:
Thickness of a thick paper is 0.07 mm.

Q. What will be the exponent, if we express 32 as a power of 2?

1. 5
2. 7
3. 4
4. 6

Q.

The standard form of 234000000 is:

1. 0.234

2. 2.34 ​

3. 2.34

4. 0.234

Q.

Express the number appearing in the following statement in standard form: Diameter of the Earth is $1,27,56,000m$.

Q.

Question 2(ii)
Express the following numbers in usual form:
$4.5\times {10}^4$

Q.

Express in standard form of 21700000

1. 

2. 

3. 

4. 

Q. Question 1(i)
Express the following numbers in standard form:
0.0000000000085

Q. Question 4
In a stack there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. what is the total thickness of the stack?

Q. Question 1(v)
Express the following numbers in standard form:
31860000000

Q. Question 2(iv)
Express the following numbers in usual form:
$1.0001\times {10}^9$

Q. Question 2(v)
Express the following numbers in usual form:
$5.8\times {10}^{12}$

Q.

Question 109

Express $\frac{1.5\times {10}^6}{2.5\times {10}^{-4}}$ in the standard form.

Q. The standard form of $0.0005361$ is ___.

1. $53.61\times {10}^4$
2. $5.361\times {10}^{-4}$
3. $5.361\times {10}^{-3}$
4. $5361\times {10}^{-6}$

Q.

Question 3(iii)
Express the number appearing in the following statements in standard form:
Size of bacteria is 0.0000005 m.

Q. Question 3(i)
Express the number appearing in the following statements in standard form:
$1micronisequalto\frac{1}{1000000}m,$

Q. What will be the standard form for $0.00000698$?

1. $6.98\times {10}^{-7}$
   
2. $6.98\times {10}^{-5}$
3. $6.98\times {10}^{-6}$
4. $6.98\times {10}^6$

Q. Question 1(ii)
Express the following numbers in standard form:
0.00000000000942

Q. Question 3(iv)
Express the number appearing in the following statements in standard form:
Size of a plant is 0.00001275 m.

Q.

Express the following numbers in standard form :

(v) $3,90,979$

Q. Question 1(iv)
Express the following numbers in standard form: 0.00000000837

Q. Which of the following options are equal to $0.0015246$ ?

1. $1.5246\times {10}^{-3}$
2. $15.246\times {10}^{-4}$
3. $0.15246\times {10}^{-2}$
4. $152.46\times {10}^{-4}$

Q.

How do you write 0.00079 in scientific notation?

1. 7.9 x 10^(-4)

2. 7.9 x10^(-9)

3. 7.9 x10^(-7)

4. 7.9

Q.

Question 24

In the following question, out of the four options, only one is correct. Write the correct answer.

The standard form of 0.000064 is :

(a) $64\times {10}^4$

(b) $64\times {10}^{-4}$

(c) $6.4\times {10}^5$

(d) $6.4\times {10}^{-5}$

Q.

Question 48

In the following question, fill in the blanks to make the statements true.

The usual from of $3.41\times {10}^6$is ___ .

Q.

If m is a factor of $14pq$, then m is also a factor of $28p^{2}q$.

1. 3

2. 2

Q.

Question 115(viii)

Express the following in standard form:
$Express5hectaresinc{m}^2.(1hec=10000m^2)$

Q.

Question 115(i)

Express the following in standard form.The mass of a proton in grams is$\frac{1673}{1000000000000000000000000000}$

Q.

Question 57

In the following question, fill in the blanks to make the statements true.

The usual form fo $2.3\times {10}^{10}$ is ___ .

Q.

Question 54

In the following question, fill in the blanks to make the statements true.

To add the numbers given in standard form we first convert them into numbers with ___ exponents.