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Cornerstone · Grades 3–5 Keystones #1 14 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = -2

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 4:4:3

    Answer: 48, 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 44, 39, 10, 43, 45, 9, 47, 10. Give your answer to 2 decimal places

    Answer: 30.88

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