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Cornerstone · Grades 3–5 Keystones #1 31 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 12 = 18

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 48, 44, 44, 26, 6, 30

    Answer: 33

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