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
Associative property is not followed in _____
  • A
    whole numbers
  • B
    natural numbers
  • C
    rational numbers
    Correct
  • D
    integers
2
____ is the identity for the addition of rational numbers.
  • A
    0
    Correct
  • B
    None of these
  • C
    -1
  • D
    1
3
____ is the multiplicative identity for rational numbers.
  • A
    -1
  • B
    0
  • C
    None of these
  • D
    1
    Correct
4
The additive inverse of \(\frac{7}{5}\) is
  • A
    \(\frac{7}{5}\)
  • B
    \( - \frac{7}{5}\)
    Correct
  • C
    0
  • D
    None of these
5
Zero has ________ reciprocal.
  • A
    no
    Correct
  • B
    3
  • C
    2
  • D
    1
6
The numbers ________ and ________ are their own reciprocals.
  • A
    1 and 0
  • B
    -1 and 0
  • C
    1 and -1
    Correct
  • D
    None of these
7
The reciprocal of – 5 is ________.
  • A
    None of these
  • B
    \(\frac{{ - 1}}{5}\)
    Correct
  • C
    -5
  • D
    5
8
Reciprocal of\(\frac{1}{x}\), where x \( \ne \) 0 is ________.
  • A
    0
  • B
    1
  • C
    -x
  • D
    x
    Correct
9
The product of two rational numbers is always a _______.
  • A
    integer
  • B
    whole number
  • C
    rational number
    Correct
  • D
    natural number
10
Simplify: \(\frac{{ - 4}}{5} \times \frac{3}{7} \times \frac{{15}}{{16}} \times \left( {\frac{{ - 14}}{9}} \right)\)
  • A
    1
  • B
    \(\frac{1}{2}\)
    Correct
  • C
    0
  • D
    -1
11
The sum of the rational numbers \(\frac{{ - 5}}{{16}}and\frac{7}{{12}}\)is
  • A
    \(\frac{{13}}{{48}}\)
    Correct
  • B
    16
  • C
    13
  • D
    12
12
What number should be added to\(\frac{7}{{12}}to\;get\frac{4}{{15}}\)?
  • A
    -19
  • B
    \(\frac{{ - 19}}{{60}}\)
    Correct
  • C
    None of these
  • D
    \(\frac{1}{2}\)
13
Rewrite \(\frac{{ - 44}}{{72}}\)in the simplest form.
  • A
    \(\frac{{ - 11}}{{19}}\)
  • B
    \(\frac{{ - 18}}{{11}}\)
  • C
    \(\frac{{ - 11}}{{18}}\)
    Correct
  • D
    \(\frac{{ - 11}}{{20}}\)
14
Sum of two rational numbers is –8, one number is\(\frac{3}{4}\), find other.
  • A
    \(\frac{{ - 35}}{4}\)
    Correct
  • B
    \(\frac{{ - 4}}{{35}}\)
  • C
    \(\frac{4}{{35}}\)
  • D
    \(\frac{{35}}{4}\)
15
Which of the rational number is positive?
  • A
    \(\frac{3}{7}\)
    Correct
  • B
    \(\frac{{ - 5}}{7}\)
  • C
    \( - \frac{4}{7}\)
  • D
    \( - \frac{3}{7}\)