Operations with Scientific Notation

(2 x 10^-5)+ (7 x 10^-5)

• 9 x 10^-10
• 14 x 10^-5
• 9 x 10^-5
• 1.4 x 10^-4

(8 x 10⁴) + (4 x 10⁴)

• 12 x 10⁴
• 1.2 x 10⁵
• 1.2 x 10⁹
• 1.2 x 10⁸

(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³
• 8 x 10³⁶
• 8 x 10⁵
• 8 x 10^-36

(5 x 10⁶)(5 x 10⁷)

• 2.5 x 10¹²
• 2.5 x 10¹⁴
• 25 x 10¹²
• 25 x 10¹³

5 x 10¹²
------------
2 x 10⁶

• 2.5 x 10²
• 2.5 x 10⁶
• 3 x 10²
• 2.5 x 10¹⁸

(2.8 * 10⁸) (2.2*10³)

• 6.16 * 10²⁴
• 5.0 * 10¹¹
• 6.16 * 10¹¹
• 61.6 * 10¹¹

Cell A = 4.2 x 10^-4

Cell B = 2.1 x 10^-5

Cell C = 8.4 x 10^-4

Cell C is ___ larger than cell A.

• 2x

• 20x

• .2x

• 4x

Find the difference.

(3.8 x 10⁴) - (2 x 10³)

• 1.8 x 10⁴

• 1.8 x 10¹

• 3.6 x 10¹

• 3.6 x 10⁴

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10^-4
• 3 x 10^-11

Solve.

 $\left(2.4\times10^4\right)\left(3.7\times10^5\right)$  

•  $6.1\times10^9$  

•  $8.8\times10^9$  

•  $8.8\times10^{20}$