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Cornerstone · Grades 3–5 Keystones #1 14 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄8

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

    Solve: 5x - 12 = 38

    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 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Find the mean of: 15, 19, 8, 2, 12

    Answer: 11.2

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