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Cornerstone · Grades 3–5 Keystones #1 31 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 89

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 6cm

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics Mean

    Find the mean of: 8, 7, 4, 9, 14

    Answer: 8.4

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