Inter Conversion between Standard and Normal Forms

Q.

Express the given number in standard form:
$21700000$

1. 2.1 x

2. 2.17 x

3. 1.17

4. 1.1701 x

Q.

Write 0.1234 in standard form.

1. It's already in standard form

2. 1234 × 10^-4

3. 12.34 × 10^-2

4. 1.234 × 10^-1

Q. Express 0.0000987 in standard form.

1. $9.87\times {10}^5$
2. $9.87\times {10}^{-5}$
3. $98.7\times {10}^6$
4. $98.7\times {10}^{-6}$

Q.

Express 5126000 in standard form.

1. 0.5126 × 10⁷

2. 5.126 × 10⁶

3. 51.26 × 10⁵

4. all of these are correct

Q.

To express the speed of the supersonic jet, which is 130000 m/s in the standard form, we write it as $1.3\times {10}^a$ m/s. The value of a is

___.

Q. Superman can fly at speeds almost equal to $2.6\times {10}^7$ m/s. A supersonic jet on the planet Krypton can fly at a maximum speed of 130000 m/s. Choose the correct option(s):

1. The jet flies 2000 times faster than Superman
2. Superman flies 200 times faster than the jet
3. The jet flies 200 times faster than Superman
4. Superman flies 2000 times faster than the jet

Q. 0.00000000837 is expressed in its standard form as $x.37\times {10}^y$, where $x$ and $y$ are integers. Express the number $y\times {10}^x$ as a numeral.

1. -90, 00, 00, 000
2. 90, 00, 00, 000
3. -9, 00, 00, 000
4. 9, 00, 00, 000

Q. Which of the following is the standard form of $671000000$?

1. $6.71\times {10}^8$
2. $6.71\times {10}^{-8}$
3. $6.71\times {10}^9$
4. $671\times {10}^8$

Q. Which of the following is the standard form of $0.00056$?

1. $5.6\times {10}^{-6}$
2. $5.6\times {10}^5$
3. $5.6\times {10}^{-4}$
4. $56\times {10}^7$

Q. The usual form of $1.05\times {10}^{-6}$ is:

1. $1050000$
2. $0.00105$
3. $10500$
4. $0.00000105$