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Cornerstone · Grades 3–5 Keystones #1 16 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x - 18 = 17

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 22, 34, 41, 26, 30, 8, 28, 22

    Answer: 26.4

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