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Cornerstone · Grades 3–5 Keystones #1 3 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄4

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x - 5 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 171 in the ratio 4:4:1

    Answer: 76, 76 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 39, 46, 42, 42, 50, 16. Give your answer to 2 decimal places

    Answer: 39.17

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