Exponenets and Power

12⁰ = ?

• 0

• 1

• 12

Choose the correct scientific notation of the following number.

39876.5

• $39.8765\ \times\ 10^3$

• $3.98765\ \times\ 10^4$

• $398.765\ \times\ 10^2$

• $3.98765\ \times\ 10^3$

10 X 10 X 10 = ?

• 30

• 100

• 1000

Simplify following using the laws of exponents.

 $a^9\ \ \div\ \ a^2$  

•  $a^{11}$  

•  $a^7$  

•  $a^{18}$  

• None of these

Express the number appearing in the following statements in standard form.

The distance between Sun and Saturn is 1,433,500,000,000 m

• 14335 x 10⁸m

• 1.4335 × 10¹² m

• 1.4335 x 10⁸ m

Expand the following number using powers of 10.

45091

• $4\ \times\ 10^4\ +\ 5\ \times\ 10^3\ \ +\ 9\ \times\ 10^1\ +\ 1\ \times\ 10^0$

• $4\ \times\ 10^5\ +\ 5\ \times\ 10^3\ \ +\ 9\ \times\ 10^1\ +\ 1\ \times\ 10^0$

• $4\ \times\ 10^4\ +\ 5\ \times\ 10^2\ \ +\ 9\ \times\ 10^1\ +\ 1\ \times\ 10^0$

Simplify: (3⁰ + 2⁰ ) × 5⁰

• 3

• 2

• 1

Simplify: (25 x 5² x t⁸) ÷ (10³ x t⁴)

• 5 x t⁴ ÷ 8

• 25 x t⁴

• 5/2 t⁴

Simplify following using the laws of exponents.

 $a^9\ \ \div\ \ a^2$  

•  $a^{11}$  

•  $a^7$  

•  $a^{18}$  

• None of these

Which is greater?

 $2^{3\ \ }or\ \ \ 3^2$  

•  $2^{3\ \ }$  

•  $3^2$  

• Both are equal