Add & Subtract using Scientific Notation

(7.2 x 10⁶) - (3.4x 10⁶)

• 3.8x10⁶

• 7.7x10⁶

• 3.7x 10⁶

• 3.9x10⁶

Write the answer in scientific notation.

(7.3 x 10⁵ ) + (3.7 x 10⁵ ) =

• 11.0 x 10⁵

• 1.1 x 10¹⁰

• 1.10 x 10¹¹

• 1.1 x 10 ⁶

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

(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

 $\left(4.1\times10^5\right)+\left(5.5\times10^6\right)$  Hint: Change to smaller exponent first!

• 5.91 x 10⁶

• 9.6 x 10⁵

• 9.6 x 10¹¹

• 4.65 x 10⁵

 $\left(2\times10^3\right)-\left(1.9\times10^2\right)$  Hint: Change to smaller exponent first!

•  $1.8\times10$  

•  $1.81\times10^3$  

•  $1.81\times10^5$  

•  $0.1\times10$  

•  $0.1\times10^3$  

(5.9 x 10⁷⁷ ) - (6 x 10⁷⁶ ) Hint: Change to smaller exponent first!

• 6.5 x 10⁷⁷

• 6.5 x 10⁷⁶

• 5.3 x 10⁷⁷

• 5.3 X 10⁷⁶