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Cornerstone · Grades 3–5 Keystones #1 27 May 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 27 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 60

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 1:3:1

    Answer: 14, 42 and 14
  5. 5. Statistics Mean

    Find the mean of: 3, 3, 17

    Answer: 7.6666666666667

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