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Cornerstone · Grades 3–5 Keystones #1 12 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 14

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

    Calculate the hypotenuse when a = 12cm and b = 12cm

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 16, 39, 34, 36, 35, 16

    Answer: 29.3

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