Multiplying and Dividing in Scientific Notation

When dividing numbers in scientific notation, what do you do to the exponents?
For example:
(4×10⁵) ∕ (3×10²)

• Add them
• Subtract them
• Keep them the same
• Divide them

In what types of problems do you have to make sure the exponents are the same before beginning to compute?

• Adding and Subtracting
• Multiplying and Dividing
• Subtracting and Dividing
• Adding and Multiplying

When multiplying numbers in scientific notation, what do you do to the leading numbers?
For example:
(4×10⁵)(3×10⁻²)

• Keep them the same
• Divide them
• Add them
• Multiply them

Evaluate. Leave your answer in scientific notation. 
(3.4×10⁴)(2×10⁴)

• 6.8×10⁴
• 5.4×10⁴
• 6.8×10⁸
• 5.4×10⁸

Evaluate. Leave your answer in scientific notation. 
(9.6×10⁸)  ⁄  (3×10⁴)
(hint - it's division...)

• 6.6×10²
• 3.2×10¹²
• 3.2×10⁴
• 6.6×10⁴

Order from least to greatest...
a) 4.5×10⁻³
b) 0.000045
c) 3.1×10⁻³  
d) -45          

• D , B , C,  A
• B , C , D , A
• C , A , D , B
• A , C , D , B

Which inequality sign should be placed between these numbers to make it a true/correct statement?
7.6×10⁴      ?       0.00076

• <
• >
• =

Determine the missing value.
(5.4×10^?)(3.2×10³) = 17.28×10¹⁵

• 12
• 8
• 18
• 5

What is the simplified version of

• 3.9 x 10⁶
• 4 x 10²⁰
• 4 x 10⁶
• 3.9 x 10²⁰

Multiply:
(9.4 x 10⁶)(3.2 x 10⁵)

• 30.08 x 10¹¹
• 3.8 x 10¹
• 3.008 x 10¹²
• 2.9375 x 10¹