Scientific Notation

Write 0.000972 in scientific notation.

• 9.72 x 10^-4
• 9.72 x 10^-3
• 972 x 10^-4
• 9.72 x 10⁴

Write 0.037 in scientific notation.

• 3.7 x 10^-2
• 3.7 x 10²
• 37 x 10^-3
• 37 x 10³

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

(9.6×10^-8)÷(2×10^-15)

• -4.8×10⁷
• 4.8×10⁷
• 4.8×10^-7
• -4.8×10^-7

Which is the smallest?
1.3 x 10²⁰
2.9 x 10²¹
9.5 x 10³²
8.4 x 10¹⁹

• 1.3 x 10²⁰
• 2.9 x 10²¹
• 9.5 x 10³²
• 8.4 x 10¹⁹

A microgram is equal to 1 x 10 ^-6 grams. How many times greater than a microgram is 1 x 10² grams? 

• 1 x 10^-8
• 1 x 10^-4
• 1 x 10⁴
• 1 x 10⁸

The mass of he sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times bigger is the sun than the earth?

• 3.326 x 10⁵
• 3.326 x 10⁶
• 1.99 x 10³⁰
• 1.99 x 10⁶

The mean distance from the sun to Earth is 9.29 x 10⁷ miles. Jupiter's mean distance from the sun is 4.8388 x 10⁸ miles. What is the difference between these two distances in miles? 

• 4.3092 x 10¹
• 3.9098 x 10⁷
• 3.9098 x 10⁸
• 5.7678 x 10⁸

The dimensions of an office building are 1.5 x 10² feet by 1.35 x 10³ feet. What is the perimeter of the base of the building, in feet? 

• 1.50 x 10³
• 2.85 x 10 ⁵
• 3.00 x 10 ³
• 5.70 x 10 ⁵

The Diplodocus dinosaur is believed to have become extinct approximately 1.38x10⁸ years ago.  The Oviraptor is believed to have become extinct approximately 7x10⁷ years ago.  How many years were there between the extinction of these two dinosaur types?

• 6.8 x 10⁸
• 6.8 x 10⁹
• 68 x 10⁸
• 6.8 x 10⁷