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Select all the numbers that are NOT in scientific notation.

Select all the numbers that are NOT in scientific notation.

3000

4.2 x 10⁴

1.05 x 10⁻⁷

0.0013

6,500,000

10.5 x 10⁷

0.8 x 10³

8 x 10²

1 answer

To determine which numbers are NOT in scientific notation, we need to identify the numbers that either do not present in the standard form of \( a \times 10^n \), where \( 1 \leq a < 10 \) and \( n \) is an integer.

Here are the numbers provided:

  1. 3000 - This is a number, not in scientific notation.
  2. 4.2 x 10⁴ - This is in scientific notation.
  3. 1.05 x 10⁻⁷ - This is in scientific notation.
  4. 0.0013 - This is a number, not in scientific notation.
  5. 6,500,000 - This is a number, not in scientific notation.
  6. 10.5 x 10⁷ - This is NOT in proper scientific notation because 10.5 is not less than 10.
  7. 0.8 x 10³ - This is also NOT in proper scientific notation because 0.8 is not greater than or equal to 1.
  8. 8 x 10² - This is in scientific notation.

Based on this analysis, the numbers that are NOT in scientific notation are:

  • 3000
  • 0.0013
  • 6,500,000
  • 10.5 x 10⁷
  • 0.8 x 10³