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Cornerstone · Grades 3–5 Keystones #1 26 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄4

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

    Solve: 3x + 6 = 39

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 2:1:1

    Answer: 44, 22 and 22
  5. 5. Statistics Mean

    Find the mean of: 12, 13, 19, 9, 17

    Answer: 14

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