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Cornerstone · Grades 3–5 Keystones #1 11 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 69

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 16, 11, 23, 30, 12, 20, 37. Give your answer to 2 decimal places

    Answer: 21.29

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