Question

Kristen was asked to write each of the numbers in the expression 80,000 x 25 using exponents. Her response was (8 x 10³) x 5². Was Kristen's response correct? Explain.

Answer 1

Kristen’s response is not correct because 10^3 is equals to 1,000. Then, if it will be multiplied by 8, it will only be 8,000. It should be 8x10^4. in order for the answer to be 80,000. The 5^2 is correct because the 5 is doubled because of its exponent shown which is 2 and 5^2 is equal to 25. Therefore, the correct answer should be (8 x 10^4) x 5^2.