CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade VIII - Rational Numbers
Question 1
1.
Find the difference of the decimal numbers at the points labelled with letters A and B
  • 1
  • 0.6
  • 0.9
  • 0.4
  • 0.2
Question 2
2.
    • 15
    • +
    • 19
      7
    • = ______
  • 18
  • 124
    7
  • 122
    7
  • 124
    9
  • 124
    5
Question 3
3.
The decimal number 4.019 lies between
  • {3.999,4.009}
  • {4.029,4.039}
  • {4.020,4.021}
  • {4.009,4.029}
  • {4.017,4.018}
Question 4
4.
    • The additive inverse of
    • 2
      9
    • is
  • (
    -2
    9
    		 )
  • 0
  • 9
    -2
  • (
    -1
    2
    9
    		 )
  • 9
    2
Question 5
5.
Which of the following are true?
a)
real numbers are closed under division
b)
real numbers are closed under subtraction
c)
real numbers are closed under addition
d)
real numbers are closed under multiplication
  • {a,b}
  • {a,b,c}
  • {a,c}
  • {a,d}
  • {b,c,d}
Question 6
6.
    • Which of the following decimal numbers lie between
    • 4470.9
    • and
    • 4471.0
    • ?
  • 4470.86
  • 44709.71
  • 4470.97
  • 447.1
  • 4471.04
Question 7
7.
    • Find the position of the rational number
    • 43
      7
    • on the number line
  • R
  • E
  • G
  • H
  • J
Question 8
8.
Find the rational number at the point labelled with letter P
  • 23
    5
  • 23
  • 23
    3
  • 7
  • 25
    3
Question 9
9.
Which of the following are true?
a)
2
+
(
15
+
18
)
=
(
2
+
15
)
+
18
b)
11
✕
(
2
✕
15
)
=
(
11
✕
2
)
✕
15
c)
18
÷
(
11
÷
2
)
=
(
18
÷
11
)
÷
2
d)
15
−
(
18
−
11
)
=
(
15
−
18
)
−
11
  • {c,a}
  • {d,b}
  • {c,d,a}
  • {a,b}
  • {c,b,a}
Question 10
10.
Find the sum of the rational numbers at the points labelled with letters R and S
  • 29
    2
  • 16
  • 33
    2
  • 61
    4
  • 31
    2