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Cornerstone · Grades 3–5 Keystones #1 29 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 12

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 4:1:1

    Answer: 60, 15 and 15
  5. 5. Statistics Mean

    Find the mean of: 15, 20, 10, 13

    Answer: 14.5

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