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Cornerstone · Grades 3–5 Keystones #1 23 June 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 5⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 23

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 12, 46, 43, 42, 19, 25

    Answer: 31.2

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