Question

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

Answer 1

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**