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

Five GCSE retrieval questions · 1 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 3⁄11

    Answer: 4⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics Mean

    Find the mean of: 16, 15, 7

    Answer: 12.666666666667

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