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Cornerstone · Grades 3–5 Keystones #1 10 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄3

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 42

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

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 29, 14, 27, 40, 19, 11, 23

    Answer: 23.3

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