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Cornerstone · Grades 3–5 Keystones #1 30 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄3

    Answer: 22⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 32

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

    Calculate the hypotenuse when a = 7cm and b = 9cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 1:4:3

    Answer: 16, 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 8, 15, 48, 41, 13, 26, 9

    Answer: 22.9

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