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Cornerstone · Grades 3–5 Keystones #1 19 March 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 19 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 6 = 42

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 2:1:2

    Answer: 48, 24 and 48
  5. 5. Statistics Mean

    Find the mean of: 4, 6, 5, 17

    Answer: 8

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