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Cornerstone · Grades 3–5 Keystones #1 13 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 3⁄6

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 79

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

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 4:4:1

    Answer: 108, 108 and 27
  5. 5. Statistics Mean

    Find the mean of: 6, 6, 7, 5

    Answer: 6

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