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

Five GCSE retrieval questions · 5 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

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

    Solve: 3x - 8 = 10

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

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 18, 26, 26, 22, 10, 50

    Answer: 25.3

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