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Cornerstone · Grades 3–5 Keystones #1 30 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 3⁄11

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

    Solve: 3x - 12 = 18

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 11, 17, 46, 11, 17, 36

    Answer: 23

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