Olympiad – Class VII – Mathematics - Exponents and Powers

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Question - 1

What is the value of (30-40) x 52?

  • A 25
  • B 0
  • C -25
  • D 1

Question - 2

What is the value of  \(\left( \frac { 16 }{ 81 } \right) ^{ 2 }\) ?

  • A \(\frac { 9 }{ 2 } \).
  • B \(\frac { 2 }{ 9 } \).
  • C \(\left( \frac { 2 }{ 3 } \right) ^{ 8 }\).
  • D \(\frac { 27 }{ 8 } \).

Question - 3

Which of the following is true?

  • A 10 x 1011 = 10011
  • B 23 x 32 = 65
  • C 23 > 32
  • D p0=10000

Question - 4

What is the value of (12 x 3°- 8 x 50)?

  • A \(\frac { 1 }{ 2 } \).
  • B 2
  • C 4
  • D \(\frac { 1 }{ 4 } \).

Question - 5

Find the value of 2° + 3° + 4°.

  • A 3
  • B 234
  • C 1
  • D 24

Question - 6

What is the value of 27 x 53?

  • A 7500
  • B 16000
  • C 11200
  • D 14000

Question - 7

Which of the following is the least?
(-1)3, (-10)3, (1)5 and (-1)4

  • A 15
  • B (-10)3
  • C (-1)4
  • D (-1)3

Question - 8

Write a x a x a x c x c x c x c x d x d in exponential form.

  • A a3c3d
  • B a3c3d
  • C a3c3d2
  • D a3c4d2

Question - 9

(-11)2 x (-11)4 =(-11 )x. What is the value of x?

  • A 2
  • B 4
  • C 6
  • D -2

Question - 10

Which of the following statements is correct?

  • A (23)2 and (32)4 are not the same.
  • B (23)2 and (34)2 are the same.
  • C (750)2= 7502
  • D (57)3= 573
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