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Cornerstone · Grades 3–5 Keystones #1 22 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 45

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 12, 30, 45, 15, 24, 36, 44. Give your answer to 2 decimal places

    Answer: 29.43