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Cornerstone · Grades 3–5 Keystones #1 23 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 36

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics Mean

    Find the mean of: 4, 12, 20, 16, 3

    Answer: 11

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