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

Five GCSE retrieval questions · 3 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 77

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 2:3:1

    Answer: 50, 75 and 25
  5. 5. Statistics Mean

    Find the mean of: 4, 11, 18, 10, 3

    Answer: 9.2

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