Exponents and powers class 8

Multiplicative inverse of 2⁷ is

• 7²

• 7^-2

• 2^-7

• -2⁷

The human body has about 100 billion cells. This number

can be written in exponential form as

• 10¹¹

• 10^-11

• 10⁹

• 10^-9

Very small numbers can be expressed in standard form

using positive exponents.

• TRUE

• FALSE

(–10) × (–10) × (–10) × (–10) = 10^–4

• TRUE

• FALSE

In 2ⁿ, n is known as

• BASE

• EXPONENT

• X

• NONE OF THESE

3^–2 can be written as

The value of 3⁵ ÷ 3^–6 is

• 3⁵

• 3¹¹

• 3^-11

If y be any non-zero integer, then y⁰ is equal to

• -1

• 1

• 0

• Not defined

The standard form for 0.000064 is

• 64 X 10^-4

• 64 X 10⁴

• 6.4 X 10⁵

• 6.4 X 10^-5