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

Five GCSE retrieval questions · 7 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 32

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 5cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 12, 16, 13, 50, 34, 16

    Answer: 23.5

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