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Cornerstone · Grades 3–5 Keystones #1 27 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 38

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 4:2:1

    Answer: 64, 32 and 16
  5. 5. Statistics Mean

    Find the mean of: 5, 20, 4, 5

    Answer: 8.5

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