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Cornerstone · Grades 3–5 Keystones #1 9 May 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 May 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 4⁄8

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 20 = -2

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

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:3:1

    Answer: 72, 72 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 27, 26, 10, 10, 45, 39, 36, 7

    Answer: 25

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