Fractional Powers Lesson | GCSE Maths Edexcel IGCSE Higher

Fractional Powers

This lesson covers:

How to apply powers that are fractions

Remember that any number to the power of $\frac{1}{2}$ just means the square root. For example:

921=√9 =3

Evaluate:

1621

4

0

/

1

Evaluate:

3621

6

0

/

1

Evaluate:

831

2

0

/

1

Evaluate:

1623

64

0

/

1

Evaluate:

2732

9

0

/

1

Evaluate the following:

16−43

(Give your answer either as a fraction, or to 3 decimal places)

\frac{1}{8}|0.125

0

/

1

Evaluate the following:

25−23

(Give your answer either as a fraction, or to 3 decimal places)

\frac{1}{125}|0.008

0

/

1

Evaluate the following:

(169)23

(Give your answer either as a fraction, or to 3 decimal places)

\frac{27}{64}|0.422

0

/

1

Evaluate the following:

(94)−23

(Give your answer either as a fraction, or to 3 decimal places)

\frac{27}{8}|3.375

0

/

1

Evaluate the following:

(2536)−21

(Give your answer either as a fraction, or to 3 decimal places)

\frac{5}{6}|0.833

0

/

1