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Cornerstone · Grades 3–5 Keystones #1 24 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 114

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:4:3

    Answer: 11, 44 and 33
  5. 5. Statistics Mean

    Find the mean of: 8, 9, 5, 14

    Answer: 9

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