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Cornerstone · Grades 3–5 Keystones #1 23 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 1⁄9

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 13

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 2:3

    Answer: 14 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 41, 34, 31, 36, 13, 30, 20

    Answer: 29.3

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