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Cornerstone · Grades 3–5 Keystones #1 18 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄7

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 64

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 25, 48, 32, 5, 33, 15

    Answer: 26.3

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