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

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

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = 14

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 4:3:3

    Answer: 60, 45 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 21, 21, 17, 41, 47, 17. Give your answer to 2 decimal places

    Answer: 27.33

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