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Cornerstone · Grades 3–5 Keystones #1 21 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 21 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 50

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

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:1:4

    Answer: 10, 10 and 40
  5. 5. Statistics Mean

    Find the mean of: 4, 11, 9

    Answer: 8

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