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Cornerstone · Grades 3–5 Keystones #1 4 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x - 13 = 11

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 260 in the ratio 1:2:2

    Answer: 52, 104 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 37, 46, 22, 30, 21, 8

    Answer: 27.3

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