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Cornerstone · Grades 3–5 Keystones #1 18 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

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

    Solve: 3x + 11 = 23

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

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 2:3

    Answer: 28 and 42
  5. 5. Statistics Mean

    Find the mean of: 17, 15, 10

    Answer: 14