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Cornerstone · Grades 3–5 Keystones #1 30 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄4

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 53

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

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 4:1:1

    Answer: 112, 28 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 26, 7, 35, 11, 10, 5, 50. Give your answer to 2 decimal places

    Answer: 20.57

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