Adding/ Subtracting in Scientific Notation

Give the sum of (2.6 x 10⁶) + (4.2 x 10⁶)

• 6.8 x 10⁶

• 6.8 x 10¹²

• 8.4 x 10⁶

• 3.2 x 10¹²

Give the difference of (7.2 x 10^-7) - (4.5 x 10^-7)

• 2.7 x 10^-7

• 2.7 x 10⁰

• 1.17 x 10^-7

• 3.3 x 10^-7

(2.3 x 10^-2)+(4.1 x 10^-2)=

• 6.4 x 10^-4

• 6.4 x 10^-2

• 6.4 x 10⁰

• .64 x 10^-1

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

Give the sum of (8.7 x 10⁵) + (7.32 x 10⁷) in scientific notation

• 16.02 x 10⁷

• 7.407 x 10⁵

• 7.407 x 10⁷

• 1.602 x 10⁷

Give the sum of (5.7 x 10^-7) + (3.23 x 10^-5)

• 1.193 x 10^-12

• 3.287 x 10^-5

• 3.317 x 10^-12

• 5.53 x 10^-2

Give the difference of (6.4 x 10^-6) - (5.7 x 10^-7)

• 5.83 x 10^-6

• 7 x 10^-7

• 1.23 x 10^-13

• 1.3 x 10^-6

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

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

Give the difference of (8.7 x 10^-8) - (4.3 x 10^-10)

• 4.4 x 10^-2

• 4.4 x 10^-8

• 8.657 x 10^-8

• 1.85 x 10^-10