Evaluating Indices: Fractions, Roots, and Powers

Evaluating Indices: Fractions, Roots, and Powers

Secondary 3

Evaluate each of the following without the use of a calculator.

  1. \({{27}^{\frac{2}{3}}}\)
  2. \({{16}^{1.5}}\)
  3. \({{27}^{\frac{1}{3}}}\times {{3}^{-1}}\)
  4. \({{\left( \frac{3}{4} \right)}^{-2}}\div {{16}^{-\frac{1}{2}}}\)
  5. \({{8}^{-\frac{2}{3}}}\times {{\left( \frac{2}{5} \right)}^{2}}\div {{5}^{-2}}\)
  6. \({{\left( \frac{1}{4} \right)}^{0}}-\sqrt{64}+{{\left( \frac{1}{2} \right)}^{-3}}\)

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Answer:(i) \(9\) (ii) \(64\) (iii) \(1\) (iv) \(7\frac{1}{9}\) (v) \(1\) (vi) \(1\)

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