CBSE Class 8 Mathematics Rational Numbers MCQs

Put a tick mark(√) on the correct answer :

Question. Which of the following numbers is the additive inverse of 7/29
(i) 29/7
(ii)—29/7
(iii) –7/29
(iv) 7/29

Question. Which of the following numbers is the multiplicative inverse of 15/31
(i) 31/15
(ii)—31/15
(iii) –15/31
(iv) 15/31

Question. Which of the following numbers has no multiplicative inverse
(i) zero
(ii) 1
(iii) – 1
(iv) none of these

Question. Which of the following numbers is the product of 6/13 & -- 26/3
(i) 1
(ii) —4
(iii) –266/133
(iv) 266/133

Question. Which of the following numbers is its own reciprocal
(i) 10
(ii) zero
(iii) 1/5
(iv) 1

Question. Which of the following numbers is the decimal form of 1/4
(i)-- 0.25
(ii) 2.5
(iii) 0.25
(iv) – 2.5

Question. Which of the following numbers lies in the middle of 3/4 & 7/4
(i) 5.0
(ii) 3.0
(iii) 2.5
(iv) 1.25

Question. Which pair of following numbers are respectively the additive & multiplicative identities.
(i) 2 & 0
(ii) 1 & --1
(iii) --1 & 0
(iv) 0 & 1

Question. Which of the following numbers is the simplest form of 3/4 + ( -- 1/4) + (-- 5/4)
(i) 9/4
(ii) —3/4
(iii) -- 9/4
(iv) 7/4

Question. Which of the following properties indicates the given operation [( –1/5) + (--3/5) ] + (1/7) = (--1/5) + [ (--3/5)+ (1/7)]
(i) commutative
(ii) associative
(iii) distributive
(iv) none of these