CBSE  /  Class 7  /  Maths  /  Exponents and Powers

  • 1. 
    30 × 40 × 50 =

  • 1
  • 3
  • 4
  • 6

  • 2. 
    (20 + 30) × 40 =

  • 1
  • 2
  • 3
  • 4

  • 3. 
    30 + 40 + 50 =

  • 1
  • 2
  • 3
  • none of these

  • 4. 
    Which of the following is true?

  • 20 = (100)0
  • 10² × 108 = 1016
  • 2² × 3³ = 65
  • 2³ > 3²

  • 5. 
    (2² × 2)² =

  • 2³
  • 24
  • 25
  • 26

  • 6. 
    \(\frac { { 3 }^{ 8 } }{ { 3 }^{ 5 }\times { 3 }^{ 3 } } =\)

  • 1
  • 3
  • 5
  • 8

  • 7. 
    (\(\frac { { a }^{ 4 } }{ { a }^{ 2 } } \times { a }^{ 3 }=\))

  • a4
  • a5
  • a6
  • a8

  • 8. 
    82 ÷ 24 =

  • 1
  • 2
  • 3
  • 4

  • 9. 
    (-2a)³ =

  • 2a³
  • 4a³
  • 8a³
  • -8a³

  • 10. 
    am ÷ bm =

  • am bm
  • (\(\frac { a }{ b } \))m
  • \(\frac { a }{ b } \)
  • 1
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