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Cornerstone · Grades 3–5 Keystones #1 21 September 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄4

    Answer: 25⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 75

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

    Calculate the hypotenuse when a = 11cm and b = 6cm

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 4, 3, 2, 11, 2

    Answer: 4.4

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