Scientific Notation Review

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

Write 9.8 x 10^-5 in standard form

• 0.00098
• 0.000098
• .098
• 98,000

Write 0.000972 in scientific notation.

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

Place the following numbers in order from least to greatest:

7.8 x 10⁶, 5.1 x 10⁴, 1.25 x 10⁵, 4.09 x 10⁴

• 4.09 x 10⁴,

  1.25 x 10⁵,

  5.1 x 10⁴,

  7.8 x 10⁶

• 4.09 x 10⁴,

  5.1 x 10⁴,

  1.25 x 10⁵,

  7.8 x 10⁶,

• 1.25 x 10⁵,

  4.09 x 10⁴,

  5.1 x 10⁴,

  7.8 x 10⁶,

The diameter of the planet Mercury is

4.87 x 10³ km. The diameter of the planet Venus is 1.21x10⁴ km. The diameter of the planet Mars is 1.28 x 10³ km.

Which planet has the smallest diameter?

• Mercury

• Mars

• Venus

Order the following from

greatest to least:

5 x 10³

3.2 x 10⁸

1.2 x 10⁸

7 x 10⁵

• 7 x 10⁵ , 5 x 10³ , 3.2 x 10⁸, 1.2 x 10⁸

• 3.2 x 10⁸, 1.2 x 10⁸, 7 x 10⁵, 5 x 10³

• 1.2 x 10⁸, 3.2 x 10⁸, 5 x 10³ , 7 x 10⁵

5.79 x10^-7 > 5.32 x10^-7

• True

• False