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Cornerstone · Grades 3–5 Keystones #1 6 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 17

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 6, 7, 17

    Answer: 11

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