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Cornerstone · Grades 3–5 Keystones #1 21 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 59

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 18, 16, 6

    Answer: 13.333333333333

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