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Cornerstone · Grades 3–5 Keystones #1 21 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 4:1:4

    Answer: 40, 10 and 40
  5. 5. Statistics Mean

    Find the mean of: 20, 11, 9, 11

    Answer: 12.75

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