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

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

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 4⁄11

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

    Solve: 2x - 17 = 5

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 207 in the ratio 2:4:3

    Answer: 46, 92 and 69
  5. 5. Statistics Mean

    Calculate the mean of: 42, 13, 32, 38, 10, 37, 50

    Answer: 31.7

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