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

Five GCSE retrieval questions · 5 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄7

    Answer: 15⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 36

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 4:2:3

    Answer: 104, 52 and 78
  5. 5. Statistics Mean

    Find the mean of: 19, 4, 10, 15

    Answer: 12

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