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Cornerstone · Grades 3–5 Keystones #1 22 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 6x + 3 = 51

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

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Find the mean of: 18, 9, 4

    Answer: 10.333333333333

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