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Cornerstone · Grades 3–5 Keystones #1 20 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x - 15 = 27

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 220 in the ratio 1:2:2

    Answer: 44, 88 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 11, 24, 7, 37, 24, 8, 40

    Answer: 21.6

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