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

Five GCSE retrieval questions · 1 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 26

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 2:1:1

    Answer: 64, 32 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 28, 17, 23, 30, 11, 48

    Answer: 26.2

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