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Cornerstone · Grades 3–5 Keystones #1 27 June 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 27 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 35

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 2:1:4

    Answer: 32, 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 16, 15, 12, 17, 9

    Answer: 13.8

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