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Cornerstone · Grades 3–5 Keystones #1 11 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 1⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 44

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 29, 15, 42, 47, 5, 13, 5, 26

    Answer: 22.8

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