Workkeys Math Practice Test

To express the number 2500 in scientific notation, we first need to identify how to represent the number in the form of "a × 10^n," where "a" is a number between 1 and 10 and "n" is an integer.

Starting with 2500, we can place the decimal point so that there is only one non-zero digit to its left. For 2500, this would mean moving the decimal point two places to the left. This gives us 2.5, which is now in the correct format. Since we moved the decimal point two places left, we represent this shift with 10 raised to the power of 2.

Thus, the scientific notation for 2500 is accurately expressed as 2.5 × 10².

When evaluating the other choices:

- The first choice represents a much smaller number than 2500.

- The third choice implies an incorrect scaling upwards, suggesting a much larger number (2500 would actually be 2500).

- The fourth choice, while using a more significant coefficient (25), incorrectly places it to the power 10², which misrepresents the original value.

Therefore, the correct representation of 2500 in scientific