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

Five GCSE retrieval questions · 5 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄12 + 3⁄12

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

    Solve: 5x + 7 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 15cm

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Find the mean of: 4, 13, 18, 18, 19

    Answer: 14.4

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