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Cornerstone · Grades 3–5 Keystones #1 24 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄6

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 13 = 19

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 32, 38, 12, 26, 48, 16, 39. Give your answer to 2 decimal places

    Answer: 30.14