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Cornerstone · Grades 3–5 Keystones #1 28 March 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 28 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 3⁄5

    Answer: 39⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 15

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

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:1:1

    Answer: 72, 24 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 45, 32, 13, 21, 30, 36, 11. Give your answer to 2 decimal places

    Answer: 26.86

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