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Cornerstone · Grades 3–5 Keystones #1 30 August 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄7

    Answer: 43⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 55

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 11, 20, 35, 23, 36, 6. Give your answer to 2 decimal places

    Answer: 21.83

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