Standard Form of Exponents

Q. The standard notation of 0.85 is .

1. $8.5\times {10}^1$
2. $8.5\times {10}^{-1}$
3. $8\times {10}^{-1}$
4. $8.5\times {10}^2$

Q. Expanded form of 216 is _____.

1. (2 X 100) + (1 X 10) + (5 X 1)
2. (2 X 100) + (1 X 10) + (6 X 1)
3. (2 X 10) + (1 X 10) + (6 X 1)
4. (2 X 100) + (1 X 100) + (6 X 1)

Q. Express $3.02\times {10}^{-6}$ in normal form

1. 3020000
2. 0.00000302
3. 0.0000302
4. 302

Q. Express 51000 in standard form.

1. 5.1 X 100000
2. 5.1 X 10000
3. 5.2 X 100000
4. 5.10 X 100000

Q. Express 2543 in standard form.

1. 254.3 X 100
2. 25.43 X 1000
3. 2.543 X 1000
4. 2.543 X 10

Q. If 0.00000000837 is expressed as $x.37\times {10}^y,$ then $y\times {10}^x$ written as a numeral is

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

Q. The standard notation of 250000 is given by

1. $25\times {10}^5$
2. $2.5\times {10}^5$
3. $25\times {10}^4$
4. $2\times {10}^5$

Q. The standard notation of 1650000 is given by .

1. $1.65\times {10}^{13}$
2. $16.5\times {10}^8$
3. $1650\times {10}^7$
4. $1.65\times {10}^6$

Q. Match the Standard form of the following

1. $2.38\times {10}^{-4}$
2. $5.3\times {10}^5$
3. $3.02\times {10}^{-5}$
4. $2.15\times {10}^7$

Q. $0.0024+2400+12.3$ can be written as

1. $2.4\times {10}^{-3}+2.4\times {10}^{-3}+1.23$
2. $2.4\times {10}^{-3}+2.4\times {10}^{-3}+1.23\times {10}^{-1}$
3. $2.4\times {10}^{-3}+2.4\times {10}^3+1.23\times {10}^{-1}$
4. $2.4\times {10}^3+2.4\times {10}^3+1.23\times {10}^1$