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Cornerstone · Grades 3–5 Keystones #1 4 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 36

    Answer: x = 6
  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 24 in the ratio 1:2

    Answer: 8 and 16
  5. 5. Statistics Mean

    Find the mean of: 10, 13, 2

    Answer: 8.3333333333333

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