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Question (31)

QN009269

Which rational number has denominator 1?

(A) Integer
(B) Irrational number
(C) Natural number only
(D) Decimal number only

Correct Answer: A

Explanation:

Every integer can be written as p/1.

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Question (32)

QN009270

Find the product: (–7/10) × (–15/14)

(A) –3/4
(B) 3/4
(C) 21/20
(D) –21/20

Correct Answer: B

Explanation:

Positive result after multiplication of two negatives.

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Question (33)

QN009271

Which of the following fractions is closest to zero?

(A) –1/2
(B) 1/8
(C) –3/4
(D) 2/5

Correct Answer: B

Explanation:

1/8 has the smallest absolute value.

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Question (34)

QN009272

Evaluate: (5/9) ÷ (10/27)

(A) 3/2
(B) 2/3
(C) 1/2
(D) 27/90

Correct Answer: A

Explanation:

(5/9) × (27/10) = 3/2

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Question (35)

QN009273

Rational numbers are said to be dense because:

(A) They are very large.
(B) There is no rational number between two rational numbers.
(C) Infinite rational numbers exist between any two rational numbers.
(D) They are all whole numbers.

Correct Answer: C

Explanation:

Infinite rational numbers lie between any two rational numbers.

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Question (36)

QN009274

Which number lies exactly between –1/4 and 3/4?

(A) 1/4
(B) 1/2
(C) 0
(D) –1/2

Correct Answer: A

Explanation:

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Question (37)

QN009275

Evaluate: (–11/12) + (5/18)

(A) –23/36
(B) 23/36
(C) –1/2
(D) 1/2

Correct Answer: A

Explanation:

–33/36 + 10/36 = –23/36

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Question (38)

QN009276

Which of the following is a proper rational number?

(A) 9/4
(B) –11/3
(C) 5/8
(D) 13/7

Correct Answer: C

Explanation:

In a proper fraction, numerator is less than denominator.

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Question (39)

QN009277

The reciprocal of –13 is:

(A) 13
(B) –1/13
(C) 1/13
(D) –13

Correct Answer: B

Explanation:

Reciprocal of a is 1/a.

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Question (40)

QN009278

Evaluate: (7/8 – 1/4) + (2/3)

(A) 31/24
(B) 29/24
(C) 25/24
(D) 19/24

Correct Answer: A

Explanation:

7/8 – 1/4 = 5/8 and 5/8 + 2/3 = 31/24

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Question (31)

Which rational number has denominator 1?

Explanation:

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Question (32)

Find the product: (–7/10) × (–15/14)

Explanation:

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Question (33)

Which of the following fractions is closest to zero?

Explanation:

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Question (34)

Evaluate: (5/9) ÷ (10/27)

Explanation:

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Question (35)

Rational numbers are said to be dense because:

Explanation:

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Question (36)

Which number lies exactly between –1/4 and 3/4?

Explanation:

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Question (37)

Evaluate: (–11/12) + (5/18)

Explanation:

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Question (38)

Which of the following is a proper rational number?

Explanation:

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Question (39)

The reciprocal of –13 is:

Explanation:

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Question (40)

Evaluate: (7/8 – 1/4) + (2/3)

Explanation:

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