What is the calculator key for entering scientific notation?

The calculator key for entering scientific notation is usually labelled as "EXP" or "EE".

When you need to enter a number in scientific notation on a calculator, you typically use the "EXP" or "EE" key. This key allows you to input numbers in the form of \( a \times 10^b \), where \( a \) is the coefficient and \( b \) is the exponent. For example, to enter \( 3.2 \times 10^5 \), you would type 3.2, press the "EXP" or "EE" key, and then type 5.

Different calculators might have slight variations in how they label this key, but "EXP" and "EE" are the most common. On some calculators, you might need to press a "2nd" or "Shift" key to access the scientific notation function. Always check your calculator's manual if you're unsure.

Using scientific notation is particularly useful for handling very large or very small numbers, which are common in scientific and engineering contexts. It simplifies calculations and makes it easier to read and write these numbers. For GCSE Maths, understanding how to use this function on your calculator can save you time and help you avoid errors in your calculations.