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Cornerstone · Grades 3–5 Keystones #1 4 December 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄3

    Answer: 29⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 55

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

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

    Answer: 7.07cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 3:4:1

    Answer: 39, 52 and 13
  5. 5. Statistics Mean

    Find the mean of: 13, 7, 10, 13

    Answer: 10.75

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