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Cornerstone · Grades 3–5 Keystones #1 11 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 61

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics Mean

    Find the mean of: 15, 19, 11, 14

    Answer: 14.75

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