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Cornerstone · Grades 3–5 Keystones #1 1 September 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 1⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 17

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 34, 40, 10, 19, 10, 34

    Answer: 24.5

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