Class 7 Exponents And Powers CBSE Questions & Answers

Class 7 · Exponents And Powers

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

Questions & Answers

1
Express 256 as a power 4.
  • A
    \({{\text{4}}^{\text{8}}}\)
  • B
    \({{\text{4}}^{\text{4}}}\)
    Correct
  • C
    \({{\text{4}}^{\text{2}}}\)
  • D
    \({{\text{4}}^{\text{5}}}\)
2
Express 729 as a power of 3.
  • A
    \({{\text{3}}^{\text{6}}}\)
    Correct
  • B
    \({{\text{3}}^{\text{4}}}\)
  • C
    \({{\text{9}}^{\text{3}}}\)
  • D
    \({{\text{3}}^{\text{2}}}\)
3
Express 2048 as a power 2.
  • A
    \({{\text{2}}^{{\text{11}}}}\)
    Correct
  • B
    \({{\text{2}}^{\text{8}}}\)
  • C
    \({{\text{2}}^{\text{9}}}\)
  • D
    \({{\text{2}}^{{\text{1}}0}}\)
4
Which one is greater?
  • A
    \({{\text{1}}^{\text{8}}}\)
  • B
    \({{\text{4}}^{\text{2}}}\)
    Correct
  • C
    \({{\text{2}}^{\text{3}}}\)
  • D
    \({{\text{3}}^{\text{2}}}\)
5
Express 432 as a product of powers of prime factors.
  • A
    \({\text{8}} \times {\text{27}}\)
  • B
    \({\text{16}} \times {\text{27}}\)
  • C
    \({{\text{2}}^{\text{4}}} \times {{\text{3}}^{\text{3}}}\)
    Correct
  • D
    \({{\text{2}}^{\text{3}}} \times {{\text{3}}^{\text{3}}}\)
6
The value of \({\left( {-{\text{1}}} \right)^{{\text{55}}}}\)is
  • A
    1
  • B
    None of these
  • C
    -1
    Correct
  • D
    0
7
The value of \({\left( {-{\text{1}}} \right)^{{\text{5}}00}}\)is
  • A
    -1
  • B
    1
    Correct
  • C
    0
  • D
    None of these
8
The value of \({\left( {-{\text{1}}} \right)^{{\text{47}}}}\)is
  • A
    None of these
  • B
    0
  • C
    1
  • D
    -1
    Correct
9
The value of \({\left( {-{\text{1}}} \right)^{{\text{4}}00}}\)is
  • A
    1
    Correct
  • B
    -1
  • C
    None of these
  • D
    0
10
The value of \({\left( {-{\text{1}}} \right)^{{\text{33}}}}\)is
  • A
    -1
    Correct
  • B
    None of these
  • C
    1
  • D
    0
11
The value of \({\left( {-{\text{1}}} \right)^{{\text{25}}0}}\)is
  • A
    -1
  • B
    None of these
  • C
    1
    Correct
  • D
    0
12
The value of \({\left( {-{\text{1}}} \right)^{{\text{75}}}}\)is
  • A
    -1
    Correct
  • B
    None of these
  • C
    1
  • D
    0
13
The value of \({\left( {-{\text{1}}} \right)^{{\text{45}}0}}\)is
  • A
    1
    Correct
  • B
    None of these
  • C
    -1
  • D
    0
14
The value of \({\left( {-{\text{1}}} \right)^{{\text{91}}}}\)is
  • A
    -1
    Correct
  • B
    1
  • C
    None of these
  • D
    0
15
The value of \({\left( {-{\text{1}}} \right)^{{\text{31}}0}}\)is
  • A
    None of these
  • B
    1
    Correct
  • C
    0
  • D
    -1