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Cornerstone · Grades 3–5 Keystones #1 14 February 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

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

    Solve: 5x + 11 = 56

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 3:3:2

    Answer: 39, 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 10, 6, 6, 4, 17

    Answer: 8.6

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