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Cornerstone · Grades 3–5 Keystones #1 10 May 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 10 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 14

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

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:3:2

    Answer: 45, 45 and 30
  5. 5. Statistics Mean

    Find the mean of: 4, 20, 5, 20, 12

    Answer: 12.2

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