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Cornerstone · Grades 3–5 Keystones #1 11 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

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

    Solve: 7x - 11 = 73

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 5cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 1:2:4

    Answer: 14, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 15, 11, 18, 12

    Answer: 14

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