Rational Numbers 8TH Maths

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What should be subtracted from −34 to get -4?

1 point

(a) 13/4

(b) −13/4

(d) 4/13

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Which of the following statements is true?

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(a) Natural numbers are closed under division.

(b) Whole numbers are not closed under division.

(d) Rational numbers are closed under division.

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Which of the following statements is true?

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(a) Natural numbers are associative for division.

(b) Whole numbers are associative for division.

(d) Rational numbers are not associative for division.

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‘0’ is not _____

1 point

(a) a natural number.

(b) a whole number.

(d) a rational number

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Which of the following is the multiplicative identity for rational numbers?

1 point

(a) 1

(b) -1

(d) None of these

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The additive identity for rational numbers is

1 point

(a) 1

(b) -1

(d) None of these

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The additive inverse of 7/11 is

1 point

(a) 7/11

(b) 11/7

(d) 1

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The multiplicative inverse of −3/5 is

1 point

(a) −3/5

(b) −5/3

(d) −7/11

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The rational number that does not have a reciprocal is

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(a) 0

(b) 1

(d) 1/2

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Which of the following is the product of (−78) and (221)

1 point

(a) 12

(b) −63/16

(d) −1/12

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What should be added to −34 to get -1?

1 point

(a) 1/4

(b) –1/4

(d) –3/4

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Which of the following is the Multiplicative identity for rational numbers?

1 point

I. 1

II. -1

III. 0

IV. None of these

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Which of the following is the identity element?

1 point

I. 1

II. -1

III. 0

IV. None of these

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Which of the following is the reciprocal of the reciprocal of a rational number?

1 point

I. -1

II. 1

III. 0

IV. The number itself

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What should be added to -5/4 to get -1?

1 point

I. -1/4

II. 1/4

III. 1

IV. -3/4

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What should be subtracted from -5/4 to get -1?

1 point

I. -1/4

II. 1/4

III. 1

IV. -3/4

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Which of the following is the product of (-7/8) and 4/21?

1 point

I. -1/6

II. 12

III. -63/16

IV. -16/147

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Which of the following is the product of 7/8 and -4/21?

1 point

I. -1/6

II. 1/12

III. -16/63

IV. -147/16

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Which of the following is neither appositive nor a negative rational number?

1 point

I. 1

II. 0

III. Such a rational number doesnt exist

IV. None of these

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Which of the following lies between 0 and -1?

1 point

I. 0

II. -3

III. -2/3

IV. 4/3

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