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Cornerstone · Grades 3–5 Keystones #1 2 February 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 1⁄5

    Answer: 17⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 81

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

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 1:2:1

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

    Find the mean of: 14, 11, 3, 10, 7

    Answer: 9

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