Q1: True or False
(a) Every natural number is a rational number but every rational number needs not be a natural number
Ans: True
(b) Zero is a rational number.
View AnswerAns: True
(c) Every rational number is a whole number.
View AnswerAns: False
(d) Two rational numbers with difference numerators can't be equal.
View AnswerAns: False
(e) Every fraction is a rational number.
View AnswerAns: True
(f) Sum of two rational numbers is always a rational number.
View AnswerAns: True
(g) The rational numberlies to the right of zero on the number line.
View AnswerAns: False
(h) Every natural number is a rational number but every rational number need not be a natural number.
View AnswerAns: True
(i) 2/4 is equivalent to 4/8
View AnswerAns: True
(j) The rational numbers and are on the opposite sides of zero on the number line
View AnswerAns: True
Q2: Fill in the Blanks
(a) A rational number p /q is said to be in the lowest form if p and q have no __________.
Ans: common factor
(b) The rational number Lies to the ____________ of zero on the number line.
View AnswerAns: right
(c) If p/q is a rational number, then q can't be ___________.
View AnswerAns: 0
(d) Two rational numbers with different numerators are equal, if their numerators are in the same ______________ as their denominators.
View AnswerAns: ratio
(e) Two rational numbers are equal if they have the same __________ form.
View AnswerAns: simple
(f) A rational number p/q is negative if p & q are of __________ sign.
View AnswerAns: oppossite
(g) If the product of two non-zero rational number is 1, then they are ______________ of each other.
View AnswerAns: reciprocal
(h) Between any two distinct rational numbers there are ___________ rational numbers.
View AnswerAns: infinite
(i) Additive inverse of 2/3 is ______.
View AnswerAns:
(j) The reciprocal of ______ does not exist.
View AnswerAns: zero
Q3: By what number should we multiplyso that the product may be 24.
View AnswerAns:
Q4: What should be subtracted fromso as to get 5/9?
View AnswerAns:
Q5: Subtractfrom
View AnswerAns:
Q6: The cost ofmeters of cloth is Rs.find the cost of one meter cloth.
View AnswerAns: 19
Q7: Simplify
View AnswerAns:
Q8: A stairway consists of 14 stairs, eachcm high. What is the vertical height of the stairways ?
View AnswerAns:
Q9: Arrange the rational numbersin the ascending order.
View AnswerAns: Converting them into same denominator by using LCM
So Ascending order will be
Q10: Which of the following rational numbers is equal to its reciprocal?
(a) 1
(b) 2
(c) 1/2
(d) 0
Ans: (a)
Q11: Which is greater number in the following:
(a)
(b) 0
(c) 1/5
(d) -5
Ans: (c)
Q12: Which is lowest number in the following:
(a)
(b) 0
(c) 1/2
(d) -2
Ans: (d)
Q13: Match the Column
(a) a → ii , b → iii , c → iv , d → i
(b) b → ii , a → iii , c → iv , d → i
(c) a → ii , b → iii , c → i , d → iv
(d) a → i , b → iii , c → iv , d → ii
Ans: (a)
Q14: To reduce a rational number to its standard form, we divide its numerator and denominator by their
(a) LCM
(b) HCF
(c) product
(d) multiple
Ans: (b)
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1. What are rational numbers? |
2. How do you determine if a number is a rational number? |
3. Are all integers rational numbers? |
4. Can irrational numbers be converted into rational numbers? |
5. How are rational numbers represented on a number line? |
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