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Cornerstone · Grades 3–5 Keystones #1 13 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 6⁄10

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

    Solve: 4x + 6 = 26

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

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

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 15, 20, 8

    Answer: 14.333333333333

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