Question

9.4 × 10-4 =

0.00094
0.0094
94,000
940,000

Answer 1

0.00094

Explanation:

Scientific Notation is a shortened form of writing a number using exponents. It has the following rules:

• Use a positive exponent for large numbers greater than 1.
• Use a negative exponent for small numbers less than 1.
• Always write the first number as a value between 0 and 9.

9.4 x 10^-4 has a negative exponent and will be a number smaller than 1. This means 0.00094 and 0.0094 are options. Now count from the decimal in each to the space between 9 and 4. In the first it is 4. In the second it is 3. Since the exponent is -4, this means 0.00094 is the solution.