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Cornerstone · Grades 3–5 Keystones #1 2 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 4⁄5

    Answer: 53⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 20 = -6

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

    Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 4:1:2

    Answer: 72, 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 13, 3, 1, 15, 13

    Answer: 9

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