Applying operations on numbers expressed using scientific notation to solve mathematical and real-world problems

Add the scientific notation expressions (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

Subtract. (5.6 x 10⁶) - (2.4 x 10⁶)

• 3.2 x 10⁶

• 3.2 x 10⁰

• 3.2 x 10¹²

(2.3 x 10²)+(4.1 x 10²)=

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

(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

(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

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

Simplify. Write each answer in scientific notation.

3.2 × 10⁴ + 7.5 × 10²

• 3.2075 × 10⁴

• 3.2075 × 10⁷

• 3.2075 × 10¹⁰

• 3.2075 × 10¹³

Add.

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

Simplify and write the answer in scientific notation.

4.2 × 10³ + 5.8 × 10³

• 1.0 × 10⁴

• 1.0 × 10⁷

• 1.0 × 10¹⁰

• 1.0 × 10¹³