CBSE Class 8 Mathematics Rational Numbers Worksheet Set J

Question. Which is the largest negative integer having 4 digits?
(a) -1000
(b) -9999
(c) -1023
(d) -1111

Answer : A

Question. x and y are two rational numbers. If  x  +  y  < 5    and    3 < x < 5 ,which of the following values can y have
(a) 8/3
(b) 2
(c) 0
(d) 3

Answer : C

Question. (-7) - ? = 14
(a) -7
(b) 7
(c) 21
(d) -21

Answer : D

Question. A number line is shown below with a point P marked on it:  
Which of the following points will be the furthest from P when marked on the number line?

(a) -1/5
(b) 1/4
(c) -8/7
(d) -7/3

Answer : D

Question. Which of the following lists has numbers arranged in INCREASING order?
(a) -1/8, -1/7, 1/7, 1/8
(b) -17, -1/8, 1/7, 1/8
(c) -1/8, -1/7, 1/8, 1/7
(d) -1/7, -1/8, 1/8, 1/7

Answer : D

Question. 9.03 ÷ 899.8 is closest to
(a) 0.01
(b) 0.001
(c) 1
(d) 100

Answer : A

Question. What is 7799 ÷ 19?
(a) Quotient = 41, Remainder = 0
(b) Quotient = 41, Remainder = 9
(c) Quotient = 41.4, Remainder = 14
(d) Quotient = 410, Remainder = 9

Answer : D

Question. (As you know, 1/3, 0.5, 0 and -10 are examples of rational numbers.)....
Which is the SMALLEST POSITIVE rational number?
(a) 0
(b) 0.1
(c) 1
(d) There is no such number.

Answer : D

Question. x and y are two numbers such that 0 < x < 1 and 1 < y < 2.
Which of the following COULD be an integer?
(a) x + y
(b) y - 1
(c) x + 2
(d) Y

Answer : A

Question. 0, 1, 2, 3, 4... are called Whole Numbers.
x and y are two numbers which satisfy ALL these conditions:
(x + y) is a whole number,
(x - y) is not a whole number and
xy is not a whole number
Which of the following COULD BE values of x and y?
(a) x = 3, y = 2
(b) x = 6, y = 8
(c) x = 4.6, y = 6.4
(d) x = 1.3, y = 6.3

Answer : C

Question. The sum of two numbers is -6.5 and their difference is 4.5. What are the numbers?
(a) -1.25 and -5.25
(b) 1.25 and -5.25
(c) -1 and -5.5
(d) 1 and -7.5

Answer : C

Question. For what numbers N will the statement N/4 < 23 be true?
(a) All numbers
(b) All numbers greater than 5
(c) All numbers greater than 91
(d) All numbers less than 92

Answer : D

Question. Look at this tube of Glow Face cream being sold under a special offer:
How many grams of cream does the tube contain?

(a) 30
(b) 37.5
(c) 120
(d) 150

Answer : D

Question. Anjana has 4 pencils in her box. Their average length is 10 cm. Which of the following is NOT POSSIBLE?
(a) The shortest pencil in the box is 2 cm long.
(b) The longest pencil in the box is 8 cm long.
(c) Two of the pencils are 10 cm each.
(d) All the pencils are of the same length.

Answer : B

Question. Ayub drops a ball from a height of 6.25 metres to the flat ground below. After the third bounce, the ball rises to a height of 40 cm. 
The height to which the ball rises after each bounce is the SAME FRACTION of the height reached on its PREVIOUS BOUNCE. What is the fraction?

(a) 1/2
(b) 2/5
(c) 5/8
(d) 39/125

Answer : B
 

Please refer to attached file for Rational Numbers