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Cornerstone · Grades 3–5 Keystones #1 17 June 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 June 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 10 = 110

    Answer: x = 15
  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 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 37, 29, 27, 39, 44, 16, 39, 18. Give your answer to 2 decimal places

    Answer: 31.13

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