# 6 Powers and surds on your calculator

## Inputting fractional and negative powers

In Activity 4 you saw how to use the key to input powers on the calculator. The key can be used with other functions, such as the fraction template , to calculate fractional and negative powers.

## Activity 14 Calculating more powers

Calculate each of the following using your calculator, giving your answer correct to 3 significant figures.

### Answer

1. (to 3 significant figures) using the key sequence .
2. (to 3 significant figures) using the key sequence .
3. (to 3 significant figures) using the key sequence .

OpenLearn - Using a scientific calculator
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