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Cornerstone · Grades 3–5 Keystones #1 4 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 4 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 15 = -3

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics Mean

    Find the mean of: 12, 3, 5, 2, 13

    Answer: 7

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