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Cornerstone · Grades 3–5 Keystones #1 28 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 25

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 50, 14, 8, 35, 11, 36, 28

    Answer: 26

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