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Cornerstone · Grades 3–5 Keystones #1 14 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = 5

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 2:1:3

    Answer: 54, 27 and 81
  5. 5. Statistics Mean

    Calculate the mean of: 13, 5, 29, 36, 19, 41. Give your answer to 2 decimal places

    Answer: 23.83

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