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Cornerstone · Grades 3–5 Keystones #1 2 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 31

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

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 43, 48, 26, 17, 39, 44, 48, 31

    Answer: 37

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