Question

The display on a calculator screen is shown below. 2.601455 E -8 What number does the calculator display represent? A. 260,145,500 B. 26,014,550 C. 0.0000000260 D. 0.0000000026

Answer 1

C. 0.0000000260

Explanation:

2.601455 E -8

2.601455 ÷ 10⁸

0.00000002601455

Answer 2

C. 0.0000000260

Explanation:

"E" just means 10 to the power of whatever number follows the E.

In this case, the number that follows the E is -8, which means our number is in the scientific notation:

`2.601455*10^(-8)`

Multiplying a number by a negative power of 10 means moving the decimal point of that number so many places to the left. Here, since the power is -8, we need to move the decimal point 8 places to left. We will be left with a decimal number that has 7 zeroes in front before the 2 appears:

0.00000002601455

This matches C, which is the answer.