Adding and Subtracting Exponents

(2.3 x 10²)+(4.1 x 10²)=

• 6.4 x 10⁴
• 6.4 x 10²
• 6.4 x 10⁰
• .64 x 10¹

(2.9 x 10^-9) - (1.7 x 10^-9)

• 1.2 x 10^-18
• 1.2 x 10^-9
• 4.6 x 10^-9
• 1.335 x 10^-4

3.2 x 10² + 2.2 x 10²

• 5.7 x 10²

• 54 x 10²

• 5.7 x 10⁴

• 5.4 x 10²

• 7.13 x 10³

• 7.13 x 10²

• 71.3 x 10³

• 713,000

(7.2 x 10⁶)-(3.4x 10⁶)

• 3.8x10⁶
• 7.7x10⁶
• 3.7x 10⁶
• 3.9x10⁶

Write the answer in scientific notation.
5 x 10⁸ -   3.4 x 10⁸  =

• 2.4 x 10⁸
• 2.4 x 10⁰
• 1.6 x 10⁰
• 1.6 x 10⁸

Subtract the within the scientific notation. 
(2 x 10³) - (1.9 x 10²)

• 1.81 x 10⁵
• 1.81 x 10³
• 1.81 x 10⁶
• 1.81 x 10⁴

Solve:

(8.0 x 10¹³) - (7.5 x 10¹²)

• 7.25 x 10¹³

• 7.25 x 10¹²

• 1.55 x 10¹³

• 1.55 x 10¹²

Write the answer in scientific notation.
4.1 x 10⁵ +   5.5 x 10⁶  =

• 5.91 x 10⁶
• 9.6 x 10⁵
• 9.6 x 10¹¹
• 4.65 x 10⁵

(2.8 x 10⁸)+(5.4 x 10⁹)

• 5.68 x 10⁹
• 5.69 x 10⁹
• 5.67 x 10⁹
• 5.70 x 10⁹