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Cornerstone · Grades 3–5 Keystones #1 23 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 7⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 34

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 17, 30, 7, 15, 26, 15

    Answer: 18.3

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