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Cornerstone · Grades 3–5 Keystones #1 20 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄12 + 1⁄12

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 76

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:3:2

    Answer: 12, 36 and 24
  5. 5. Statistics Mean

    Find the mean of: 2, 17, 3, 2

    Answer: 6

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