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Cornerstone · Grades 3–5 Keystones #1 29 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 1⁄4

    Answer: 13⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 51

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 5cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:1

    Answer: 60 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 40, 41, 7, 7, 48, 9, 16, 45

    Answer: 26.6

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