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Cornerstone · Grades 3–5 Keystones #1 6 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 26

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

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

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

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 17, 8, 7, 26, 16, 37, 16

    Answer: 18.1

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