add and subtract scientific notation

How would you write 4.3756 x 10⁴ in standard form?

How would you write 0.0005 in scientific notation?

• 50 x 10^-5

• 5 x 10^-4

• 5 x 10³

• .5 x 10³

Which of the following numbers is written in scientific notation?

• 20.35 x 10⁴

• .2035 x 10⁴

• 2035 ⁴

• 2.035 x10⁴

(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

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

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

(8 x 10^-23) - (2 x 10^-25)

• 7.98 x 10^-23
• 6 x 10^-23
• 6 x 10^-25
• 7.98 x 10^-25

Solve:
(8.0 x 10¹³) - (7.5 x 10¹²)

• 1.55 x 10¹³
• 0.5 x 10⁰
• 5.0 x 10¹¹
• 5.0 x 10¹³

Add using scientific notation.
(5.2 x 10⁷) + (3.01 x 10⁴)

• 5.20301 x 10¹¹
• .520301 x 10⁷
• 5.20301 x 10⁷
• 5.20301 x 10⁸