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Cornerstone · Grades 3–5 Keystones #1 1 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 4⁄5

    Answer: 57⁄40
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 28

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:4

    Answer: 12, 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 23, 25, 13, 13, 49, 9, 28, 10

    Answer: 21.25

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