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Cornerstone · Grades 3–5 Keystones #1 19 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 3⁄12

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 16 = 68

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 9, 23, 37, 33, 44, 32, 26, 46

    Answer: 31.25

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