Comparing and Ordering Numbers with Scientific Notation

Which of these numbers is the smallest?

• 3.5 x10⁷

• 3 x10⁷

• 5 x10⁷

• 5.5 x10⁷

What does "ASCENDING" order mean?

• Putting numbers is order from smallest to largest

• Putting numbers in order from largest to smallest

To compare two numbers that are in scientific notation, first compare the ________ . If they are the same, then compare the ___________.

• decimals; exponents

• first number; next number

• exponents; decimals

Which of these numbers is the greatest?

• 9 x 10⁹

• 8.1 x10⁸

• 9.02 x10⁹

• 6.35 x10⁷

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,

Which of the following numbers is the least?

• 7 x 10⁸
• 7.1 x 10⁸
• 7 x 10⁹
• 7.1 x 10⁹

Which number is the greatest?

• 5.25 x 10⁵
• 2.55 x 10⁵
• 5.55 x 10⁵
• 5 x 10⁵

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

50.1 x 10^-3  >  4.8 x 10^-1

• True
• False