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

Five GCSE retrieval questions · 7 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄7

    Answer: 12⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 35

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

    Calculate the hypotenuse when a = 4cm and b = 15cm

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 6, 45, 43, 18, 19, 47

    Answer: 29.7

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