Class 7 Rational Numbers CBSE Questions & Answers

Class 7 · Rational Numbers

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

Questions & Answers

1
A number which can be written in the form\(\frac{p}{q}\), where p and q are _______ and \(q \ne {\text{ }}0\)is called a rational number.
  • A
    irrational number
  • B
    integers
    Correct
  • C
    none of these
  • D
    negative number
2
Find: \(\frac{{ - 4}}{5} \times \frac{3}{7} \times \frac{{15}}{{16}} \times \left( {\frac{{ - 14}}{9}} \right)\)
  • A
    0
  • B
    2
  • C
    \(\frac{1}{2}\)
    Correct
  • D
    1
3
Find a rational number between \(\frac{1}{4}\) and \(\frac{1}{2}\).
  • A
    0
  • B
    \(\frac{1}{2}\)
  • C
    2
  • D
    \(\frac{3}{8}\)
    Correct
4
\(\frac{1}{2}{\text{ }} \times {\text{ 1 }} = {\text{ }}\_\_\_\_\_\_\_\)
  • A
    1
  • B
    \(\frac{1}{2}\)
    Correct
  • C
    2
  • D
    0
5
Write the additive inverse of\(\frac{6}{7}\).
  • A
    \( - \frac{6}{7}\)
    Correct
  • B
    1
  • C
    0
  • D
    \(\frac{6}{7}\)
6
Find the multiplicative inverse of\(\frac{2}{9}\).
  • A
    \(\frac{2}{9}\)
  • B
    \(\frac{9}{2}\)
    Correct
  • C
    \( - \frac{2}{9}\)
  • D
    \( - \frac{9}{2}\)
7
A number which can be written in the form\(\frac{p}{q}\), where p and q are integers and _____ is called a rational number.
  • A
    none of these
  • B
    q = 1
  • C
    q = 0
  • D
    \(q \ne {\text{ }}0\)
    Correct
8
The product of two rational numbers is always a _______.
  • A
    irrational number
  • B
    negative number
  • C
    rational number
    Correct
  • D
    None of these
9
Find: \(\frac{2}{5} \times \frac{{ - 3}}{7} - \frac{1}{{14}} - \frac{3}{7} \times \frac{3}{5}\)
  • A
    2
  • B
    \(\frac{1}{2}\)
  • C
    1
  • D
    \( - \frac{1}{2}\)
    Correct
10
Write the additive inverse of\(\frac{9}{8}\).
  • A
    1
  • B
    \( - \frac{9}{8}\)
    Correct
  • C
    0
  • D
    \(\frac{9}{8}\)
11
\(0{\text{ }} \times {\text{ }}\frac{1}{4}{\text{ }} = {\text{ }}\_\_\_\_\_\_\_\)
  • A
    \(\frac{1}{4}\)
  • B
    1
  • C
    0
    Correct
  • D
    4
12
Find the multiplicative inverse of\( - \frac{9}{{13}}\).
  • A
    \(\frac{{13}}{9}\)
  • B
    \( - \frac{{13}}{9}\)
    Correct
  • C
    \(\frac{9}{{13}}\)
  • D
    \( - \frac{9}{{13}}\)
13
A number which can be written in the form _____, where p and q are integers and \(q \ne {\text{ }}0\)is called a rational number.
  • A
    p + q
  • B
    \(\frac{p}{q}\)
    Correct
  • C
    \(p{\text{ }} \times {\text{ }}q\)
  • D
    p – q
14
\(0{\text{ }} \times {\text{ }}\frac{1}{2}{\text{ }} = {\text{ }}\_\_\_\_\)
  • A
    \(\frac{1}{2}\)
  • B
    2
  • C
    0
    Correct
  • D
    1
15
Find: \( - \frac{2}{3} \times \frac{3}{5} + \frac{5}{2} - \frac{3}{5} \times \frac{1}{6}\)
  • A
    0
  • B
    1
  • C
    2
    Correct
  • D
    None of these