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

Five GCSE retrieval questions · 1 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 44

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 1:2:2

    Answer: 27, 54 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 26, 23, 23, 14, 33, 32

    Answer: 25.2

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