Math Domain A.1 : Topic 2

Express a number in scientific notations and vice versa.

1 / 20

Which of the following is the correct scientific notation of 450000?

A) $4.5\times10^4$

B) $0.45\times10^6$

C) $45\times10^4$

D) $4.5\times10^5$

2 / 20

Convert $6.2\times10^3$ into standard form.

A) $62$

B) $6200$

C) $62000$

D) $620$

3 / 20

Which number is written in correct scientific notation?

A) $320\times10^1$

B) $0.32\times10^4$

C) $3.2\times10^3$

D) $32\times10^2$

4 / 20

Convert $0.00056$ into scientific notation.

A) $5.6\times10^{-3}$

B) $56\times10^{-5}$

C) $5.6\times10^{-4}$

D) $0.56\times10^{-2}$

5 / 20

Which is equal to $9.1\times10^{-2}$?

A) $91$

B) $0.091$

C) $0.0091$

D) $910$

6 / 20

The number 7,000,000 in scientific notation is:

A) $7\times10^5$

B) $0.7\times10^7$

C) $7\times10^6$

D) $7\times10^7$

7 / 20

Which is NOT in proper scientific notation?

A) $12.5\times10^2$

B) $1.2\times10^3$

C) $9.8\times10^0$

D) $5.0\times10^{-3}$

8 / 20

Convert $3.5\times10^4$ into standard form.

A) $3500$

B) $350$

C) $350000$

D) $35000$

9 / 20

Which number is larger?

A) $9\times10^4$

B) $2\times10^5$

C) $1\times10^6$

D) $5\times10^3$

10 / 20

Convert $0.000009$ into scientific notation.

A) $9\times10^{-7}$

B) $9\times10^{-5}$

C) $9\times10^{-6}$

D) $9\times10^{-8}$

11 / 20

Which is equivalent to $0.0032$ in scientific notation?

A) $3.2\times10^{-2}$

B) $0.32\times10^{-1}$

C) $3.2\times10^{-3}$

D) $32\times10^{-4}$

12 / 20

What is the power of $10$ in $0.00012$ in scientific notation?

A) $10^{-5}$

B) $10^{-4}$

C) $10^{-3}$

D) $10^{-2}$

13 / 20

Which number is correctly expressed in scientific notation?

A) $5.0\times10^2$

B) $0.05\times10^4$

C) $50\times10^1$

D) $0.5\times10^3$

14 / 20

Convert $8.9\times10^{-1}$ into decimal form.

A) $8.9$

B) $0.089$

C) $89$

D) $0.89$

15 / 20

Which is the smallest number?

A) $3\times10^2$

B) $2\times10^3$

C) $1\times10^4$

D) $5\times10^1$

16 / 20

Convert 1200000 into scientific notation.

A) $0.12\times10^7$

B) $12\times10^5$

C) $1.2\times10^6$

D) $1.2\times10^5$

17 / 20

Which represents a very small number?

A) $6.7\times10^5$

B) $2.3\times10^2$

C) $4.5\times10^3$

D) $8.1\times10^{-4}$

18 / 20

Convert $0.25$ into scientific notation.

A) $2.5\times10^1$

B) $25\times10^{-2}$

C) $0.25\times10^0$

D) $2.5\times10^{-1}$

19 / 20

Which is correct for 50000?

A) $5\times10^4$

B) $5\times10^3$

C) $5\times10^5$

D) $50\times10^3$

20 / 20

A number in scientific notation has coefficient $0.9$. What is wrong?

A) Coefficient must be $\ge 1$

B) Exponent is missing

C) Base is incorrect

D) Coefficient is less than $1$

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