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Cornerstone · Grades 3–5 Keystones #1 30 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄6

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 7 = 113

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

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 125 in the ratio 2:2:1

    Answer: 50, 50 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 29, 12, 19, 9, 7, 5, 40, 31

    Answer: 19

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