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Cornerstone · Grades 3–5 Keystones #1 28 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄4

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 75

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 27, 29, 16, 47, 11, 39, 15

    Answer: 26.3

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