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Cornerstone · Grades 3–5 Keystones #1 2 March 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄5

    Answer: 24⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 19

    Answer: x = 7
  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

    Divide 182 in the ratio 2:2:3

    Answer: 52, 52 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 35, 45, 16, 13, 26, 43. Give your answer to 2 decimal places

    Answer: 29.67

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