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Cornerstone · Grades 3–5 Keystones #1 11 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 39

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

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Find the mean of: 16, 17, 7, 20

    Answer: 15

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