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Cornerstone · Grades 3–5 Keystones #1 19 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 36

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

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 49, 41, 46, 10, 48, 21, 15. Give your answer to 2 decimal places

    Answer: 32.86