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Cornerstone · Grades 3–5 Keystones #1 3 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 5⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 16 = 24

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 10, 10, 7, 7

    Answer: 8.5

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