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Cornerstone · Grades 3–5 Keystones #1 8 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄6

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 33

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

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 2:3:3

    Answer: 52, 78 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 27, 29, 41, 32, 10, 6

    Answer: 24.2

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