Math 9th Chap 2 : Topic 1 - Maryam Publications

Math Chapter 2 : Topic 1

Scientific Notation

1 / 20

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

A) $45 \times 10^{4}$

B) $0.45 \times 10^{6}$

C) $4.5 \times 10^{5}$

D) $4.5 \times 10^{4}$

2 / 20

Convert $6.2 \times 10^{3}$ into standard form.

A) $62000$

B) $620$

C) $6200$

D) $62$

3 / 20

Which number is written in correct scientific notation?

A) $320 \times 10^{1}$

B) $32 \times 10^{2}$

C) $0.32 \times 10^{4}$

D) $3.2 \times 10^{3}$

4 / 20

Convert $0.00056$ into scientific notation.

A) $0.56 \times 10^{- 2}$

B) $56 \times 10^{- 5}$

C) $5.6 \times 10^{- 4}$

D) $5.6 \times 10^{- 3}$

5 / 20

Which is equal to $9.1 \times 10^{- 2}$?

A) $0.091$

B) $0.0091$

C) $910$

D) $91$

6 / 20

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

A) $7 \times 10^{5}$

B) $7 \times 10^{6}$

C) $0.7 \times 10^{7}$

D) $7 \times 10^{7}$

7 / 20

Which is $NOT$ in proper scientific notation?

A) $9.8 \times 10^{0}$

B) $1.2 \times 10^{3}$

C) $12.5 \times 10^{2}$

D) $5.0 \times 10^{- 3}$

8 / 20

Convert $3.5 \times 10^{4}$ into standard form.

A) $3500$

B) $350$

C) $35000$

D) $350000$

9 / 20

Which number is larger?

A) $2 \times 10^{5}$

B) $9 \times 10^{4}$

C) $5 \times 10^{3}$

D) $1 \times 10^{6}$

10 / 20

Convert $0.000009$ into scientific notation.

A) $9 \times 10^{- 6}$

B) $9 \times 10^{- 7}$

C) $9 \times 10^{- 5}$

D) $9 \times 10^{- 8}$

11 / 20

Which is equivalent to $0.0032\ $in scientific notation?

A) $3.2 \times 10^{- 2}$

B) $0.32 \times 10^{- 1}$

C) $32 \times 10^{- 4}$

D) $3.2 \times 10^{- 3}$

12 / 20

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

A) $10^{- 4}$

B) $10^{- 5}$

C) $10^{- 2}$

D) $10^{- 3}$

13 / 20

Which number is correctly expressed in scientific notation?

A) $0.5 \times 10^{3}$

B) $5.0 \times 10^{2}$

C) $0.05 \times 10^{4}$

D) $50 \times 10^{1}$

14 / 20

Convert $8.9 \times 10^{- 1}$ into decimal form.

A) $0.089$

B) $8.9$

C) $0.89$

D) $89$

15 / 20

Which is the smallest number?

A) $3 \times 10^{2}$

B) $5 \times 10^{1}$

C) $1 \times 10^{4}$

D) $2 \times 10^{3}$

16 / 20

Convert $1200000$ into scientific notation.

A) $0.12 \times 10^{7}$

B) $1.2 \times 10^{5}$

C) $1.2 \times 10^{6}$

D) $12 \times 10^{5}$

17 / 20

Which represents a very small number?

A) $8.1 \times 10^{- 4}$

B) $6.7 \times 10^{5}$

C) $2.3 \times 10^{2}$

D) $4.5 \times 10^{3}$

18 / 20

Convert $0.25$ into scientific notation.

A) $2.5 \times 10^{- 1}$

B) $2.5 \times 10^{1}$

C) $25 \times 10^{- 2}$

D) $0.25 \times 10^{0}$

19 / 20

Which is correct for $50000$?

A) $5 \times 10^{4}$

B) $50 \times 10^{3}$

C) $5 \times 10^{3}$

D) $5 \times 10^{5}$

20 / 20

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

A) Coefficient must be $\geq 1$

B) Base is incorrect

C) Coefficient is less than $1$

D) Exponent is missing

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