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Question (31)

QN0018510

Which power of 10 represents ten lakh?

(A) 10⁵
(B) 10⁶
(C) 10⁷
(D) 10⁸

Correct Answer: B

Explanation:

Ten lakh = 1,000,000 = 10⁶.

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Question (32)

QN0018511

What is the value of (10²)(10³)(10⁴)?

(A) 10⁹
(B) 10⁸
(C) 10⁷
(D) 10⁶

Correct Answer: A

Explanation:

2 + 3 + 4 = 9.

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Question (33)

QN0018512

Which decimal is equal to one ten-thousandth?

(A) 0.001
(B) 0.0001
(C) 0.01
(D) 0.1

Correct Answer: B

Explanation:

One ten-thousandth = 1/10000.

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Question (34)

QN0018513

Simplify 10⁻¹ × 10⁴.

(A) 10³
(B) 10⁵
(C) 10⁻³
(D) 10⁻⁵

Correct Answer: A

Explanation:

−1 + 4 = 3.

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Question (35)

QN0018514

A quantity becomes 1000 times larger. Which power of 10 represents this change?

(A) 10²
(B) 10³
(C) 10⁴
(D) 10⁵

Correct Answer: B

Explanation:

1000 = 10³.

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Question (36)

QN0018515

What is the value of 10⁻⁹?

(A) 0.000000001
(B) 0.00000001
(C) 0.0000001
(D) 0.000001

Correct Answer: A

Explanation:

10⁻⁹ = 1/1000000000.

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Question (37)

QN0018516

Simplify 10⁵ ÷ 10⁻².

(A) 10³
(B) 10⁷
(C) 10⁻⁷
(D) 10⁻³

Correct Answer: B

Explanation:

5 − (−2) = 7.

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Question (38)

QN0018517

A bacterium measures one-millionth of a metre. This length can be written as:

(A) 10⁻⁵ m
(B) 10⁻⁶ m
(C) 10⁻⁷ m
(D) 10⁻⁴ m

Correct Answer: B

Explanation:

One-millionth = 10⁻⁶.

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Question (39)

QN0018518

Which statement about powers of 10 is true?

(A) Multiplying by 10⁻¹ shifts the decimal one place to the left
(B) Multiplying by 10⁻¹ shifts the decimal one place to the right
(C) Multiplying by 10² divides the number by 100
(D) 10⁻¹ = 10

Correct Answer: A

Explanation:

Multiplying by 0.1 shifts the decimal left by one place.

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Question (40)

QN0018519

The number 0.00000001 can be written as:

(A) 10⁻⁶
(B) 10⁻⁷
(C) 10⁻⁸
(D) 10⁻⁹

Correct Answer: C

Explanation:

0.00000001 = 1/100000000 = 10⁻⁸.

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Question (31)

Which power of 10 represents ten lakh?

Explanation:

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Question (32)

What is the value of (10²)(10³)(10⁴)?

Explanation:

Link:

Question (33)

Which decimal is equal to one ten-thousandth?

Explanation:

Link:

Question (34)

Simplify 10⁻¹ × 10⁴.

Explanation:

Link:

Question (35)

A quantity becomes 1000 times larger. Which power of 10 represents this change?

Explanation:

Link:

Question (36)

What is the value of 10⁻⁹?

Explanation:

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Question (37)

Simplify 10⁵ ÷ 10⁻².

Explanation:

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Question (38)

A bacterium measures one-millionth of a metre. This length can be written as:

Explanation:

Link:

Question (39)

Which statement about powers of 10 is true?

Explanation:

Link:

Question (40)

The number 0.00000001 can be written as:

Explanation:

Link:

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