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Cornerstone · Grades 3–5 Keystones #1 30 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 4⁄12

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

    Solve: 6x + 3 = 39

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

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 10, 13, 18, 4

    Answer: 11.25

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