CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade VIII - Rational Numbers
Question 1
1.
Find the product of the rational numbers at the points labelled with letters H and I
  • 944
    25
  • 1018
    27
  • 946
    25
  • 870
    23
  • 942
    25
Question 2
2.
Which of the following are true?
a)
rational numbers are closed under addition
b)
rational numbers are closed under division
c)
rational numbers are closed under multiplication
d)
rational numbers are closed under subtraction
  • {b,a,c}
  • {b,a}
  • {a,c,d}
  • {b,d}
  • {b,c}
Question 3
3.
Find the difference of the rational numbers at the points labelled with letters N and O
  • (
    -1
    2
    		 )
  • (
    -9
    10
    		 )
  • (
    -7
    10
    		 )
  • (
    -7
    8
    		 )
  • (
    -7
    12
    		 )
Question 4
4.
    • 9
    • ÷
    • 17
      3
    • = ______
  • 29
    17
  • 27
    17
  • 27
    19
  • 25
    17
  • 9
    5
Question 5
5.
Find the product of the decimal numbers at the points labelled with letters Q and R
  • 23.6
  • 24.1
  • 23.4
  • 23.9
  • 23.5
Question 6
6.
    • 4
      9
    • ✕
    • 10
    • = ______
  • 38
    9
  • 40
    11
  • 14
    3
  • 40
    7
  • 40
    9
Question 7
7.
    • 17
    • −
    • 19
      16
    • = ______
  • 251
    16
  • 255
    16
  • 253
    18
  • 253
    16
  • 253
    14
Question 8
8.
The decimal number 0.0003 lies between
  • {-0.0007,0.0013}
  • {0.0001,0.0002}
  • {0.0004,0.0005}
  • {0.0013,0.0023}
  • {-0.0017,-0.0007}
Question 9
9.
    • 118
      9
    • −
    • 11
    • = ______
  • 19
    11
  • 19
    7
  • 17
    9
  • 7
    3
  • 19
    9
Question 10
10.
Which of the following are true?
a)
10
−
(
3
✕
14
)
=
(
10
−
3
)
✕
(
10
−
14
)
b)
14
✕
(
15
+
10
)
=
(
14
✕
15
)
+
(
14
✕
10
)
c)
3
÷
(
14
+
15
)
=
(
3
÷
14
)
+
(
3
÷
15
)
d)
15
✕
(
10
−
3
)
=
(
15
✕
10
)
−
(
15
✕
3
)
  • {a,d,b}
  • {a,c,b}
  • {a,b}
  • {b,d}
  • {c,d}