Indices

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Stage 1 - Stage 3

Consider the expression $2^{-4}$2−4. Which of the following is it equivalent to?

$\frac{1}{2^4}$124

A

$\left(-2\right)^4$(−2)4

B

$2^4$24

C

$2\times\left(-4\right)$2×(−4)

D

Easy

Less than a minute

Evaluate $2^{-3}$2−3 by first expressing it with a positive index. Give your answer as a fraction.

Evaluate $8^{-2}$8−2 by first expressing it with a positive index. Give your answer as a fraction.

Evaluate $2^{-6}$2−6 by first expressing it with a positive index. Give your answer as a fraction.

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