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Cornerstone · Grades 3–5 Keystones #1 16 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 37

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 45, 27, 31, 35, 30, 26, 49. Give your answer to 2 decimal places

    Answer: 34.71

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