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Cornerstone · Grades 3–5 Keystones #1 11 November 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 23 + 25

    Answer: 1615
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 17

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics Mean

    Find the mean of: 5, 14, 13, 8, 20

    Answer: 12