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Cornerstone · Grades 3–5 Keystones #1 18 July 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄8

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 32

    Answer: x = 5
  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 117 in the ratio 2:3:4

    Answer: 26, 39 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 5, 37, 38, 48, 15, 33. Give your answer to 2 decimal places

    Answer: 29.33

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