Class 7 Integers CBSE Questions & Answers

Class 7 · Integers

This is Mathematics Class 7 Integers CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
For any three integers a, b and c, \(\left( {a \times b} \right){\text{ }} \times c = {\text{ }}\_\_\_\_\_\_\_\_.\)
  • A
    \(a \times {\text{ }}\left( {b \times c} \right)\)
    Correct
  • B
    None of these
  • C
    \(a \times {\text{ }}\left( {b - c} \right)\)
  • D
    \(a \times {\text{ }}\left( {b + c} \right)\)
2
Find: \({\text{8}}0{\text{ }} \div {\text{ }}\left( {-{\text{5}}} \right)\)
  • A
    16
  • B
    15
  • C
    14
  • D
    -16
    Correct
3
Find: \({\text{64 }} \div {\text{ }}\left( {--{\text{16}}} \right)\)
  • A
    5
  • B
    \(\frac{4}{5}\)
  • C
    4
  • D
    -4
    Correct
4
A shopkeeper earns a profit of Re 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs 5. In this period, she sold 45 pens. In the next month she earns neither profit nor loss. If she sold 70 pens, how many pencils did she sell?
  • A
    175
    Correct
  • B
    125
  • C
    0
  • D
    150
5
Suppose we represent the distance above the ground by a positive integer and that below the ground by a negative integer. If it begins to descend from 15 m above the ground, what will be its position after 45 minutes?
  • A
    210 m below
    Correct
  • B
    210 m above
  • C
    300 m below
  • D
    300 m above
6
In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If John’s scores in five successive rounds were 25, – 5, – 10, 15 and 10, what was his total at the end?
  • A
    50
  • B
    30
  • C
    35
    Correct
  • D
    45
7
\(\left( { - {\text{3}}} \right){\text{ }} \times {\text{ }}\left( { - {\text{4}}} \right){\text{ }} = {\text{ }}\_\_\_\_\_\)
  • A
    12
    Correct
  • B
    -12
  • C
    -7
  • D
    7
8
\(\left( { - {\text{7}}} \right){\text{ }} \times {\text{ }}\left( { - {\text{2}}} \right){\text{ }} \times {\text{ }}\left( { - {\text{1}}} \right){\text{ }} = {\text{ }}\_\_\_\_\_\_\_\)
  • A
    -10
  • B
    14
  • C
    10
  • D
    -14
    Correct
9
\(\left( {--{\text{15}}} \right){\text{ }} \times {\text{ }}\left[ {\left( {-{\text{7}}} \right){\text{ }} + {\text{ }}\left( {-{\text{1}}} \right)} \right]{\text{ }} = {\text{ }}\_\_\_\_\_\_\_\_\_\)
  • A
    -40
  • B
    -120
  • C
    120
    Correct
  • D
    40
10
\({\text{45 }} \div {\text{ }}\left( {--{\text{3}}} \right){\text{ }} = {\text{ }}\_\_\_\_\_\_\_\)
  • A
    48
  • B
    -15
    Correct
  • C
    -48
  • D
    15
11
When two positive integers are added we get a _________ integer.
  • A
    positive
    Correct
  • B
    negative
  • C
    similar
  • D
    None of these
12
For any two integers a and b, a – b = a + additive inverse of b = a + ______.
  • A
    b
  • B
    (– b)
    Correct
  • C
    -a
  • D
    a
13
(–5) + (............) = (– 8) + (............)
  • A
    8, 5
  • B
    0, 0
  • C
    -8, -5
    Correct
  • D
    -5, -8
14
For any integer \(a,{\text{ }}a \times {\text{ 1 }} = {\text{ 1 }} \times a = {\text{ }}\_\_\_\_\_.\)
  • A
    0
  • B
    -a
  • C
    -1
  • D
    a
    Correct
15
Find: \({\text{9}}0{\text{ }} \div {\text{ }}\left( {-{\text{ 45}}} \right)\)
  • A
    45
  • B
    -2
    Correct
  • C
    -45
  • D
    2