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Cornerstone · Grades 3–5 Keystones #1 30 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 5cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics Mean

    Find the mean of: 13, 12, 9, 7, 3

    Answer: 8.8

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