Week 26 Practice: Scientific Notation & Solving Equations

Order the following numbers from smallest to the biggest.

• 3 x10⁷

• 3.5 x10⁷

• 5.5 x10⁷

• 5 x10⁷

Place the following numbers in order from smallest to greatest.

• 7.8 x 10⁸

• 5.1 x 10⁴

• 1.25 x 10⁵
  

• 4.09 x 10²

Order the numbers from least to greatest.

• 2.55 x 10^-6

• 5 x 10^-1

• 5.55 x 10^-3

• 5.25 x 10^-8

The diameter of the planet Mercury is 4.87 x 10³ kilometers. The diameter of the planet Venus is 1.21 x 10⁴ kilometers. The diameter of Earth is 1.28 x 10⁴  kilometers. The diameter of Mars is 6.79 x 10³ kilometers. Which planet has the smallest diameter?

• Mercury
• Earth
• Venus
• Mars

Order the following from smallest to greatest.

• 1.2 x 10⁸

• 7 x 10⁵

• 5 x 10³

• 3.2 x 10^-8

Which of these numbers is the greatest?

• 9 x 10⁹
• 8 x 10⁹
• 9 x 10⁸
• 8 x 10⁸

Order the following from least to greatest.

• 6 x 10^-3

• 6.1 x 10⁰

• 1.1 x 10⁸

• 3.2 x 10²

• 6.1 x 10^-1

• positive

• negative

When writing 20 billion in scientific notation the exponent of the power of 10 will be ___.

• positive

• negative