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Cornerstone · Grades 3–5 Keystones #1 30 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 92

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 220 in the ratio 4:4:3

    Answer: 80, 80 and 60
  5. 5. Statistics Mean

    Find the mean of: 2, 17, 4, 10, 17

    Answer: 10

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