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Cornerstone · Grades 3–5 Keystones #1 28 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 4⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 36

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 8cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 156 in the ratio 1:3:2

    Answer: 26, 78 and 52
  5. 5. Statistics Mean

    Find the mean of: 3, 17, 7, 19, 19

    Answer: 13

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