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Cornerstone · Grades 3–5 Keystones #1 23 August 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 4⁄8

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

    Solve: 7x - 19 = 51

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 2:1:2

    Answer: 30, 15 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 34, 31, 41, 20, 39, 40, 25, 40

    Answer: 33.75

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