Question

Approximately, what is 5 x 10^7 - 2.48 x 10^2?

a) 5 x 10^6
b) 5 x 10^7
c) 5 x 10^8
d) 4 x 10^8

Answer 1

The approximate value of 5 x 10^7 - 2.48 x 10^2 is 5 x 10^7, as the subtraction of 2.48 x 10^2 is negligible, making option (b) the correct answer.

Step-by-step explanation:

The question asks to approximate the value of 5 x 10^7 - 2.48 x 10^2.

We first evaluate each term in scientific notation:

• 5 x 10^7 is 50,000,000.
• 2.48 x 10^2 is 248.

Subtracting the two:

1. 5 x 10^7 - 2.48 x 10^2 = 50,000,000 - 248
2. 50,000,000 - 248 is approximately 50,000,000 since 248 is negligibly small in comparison.
3. In scientific notation, 50,000,000 is 5 x 10^7.

Therefore, the answer to the question is 5 x 10^7, which is option (b).