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Cornerstone · Grades 3–5 Keystones #1 17 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 24

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

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 4:3:1

    Answer: 80, 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 14, 5, 8

    Answer: 9

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