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Cornerstone · Grades 3–5 Keystones #1 14 June 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 3⁄5

    Answer: 59⁄40
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 19

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

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 28, 16, 12, 26, 9, 36. Give your answer to 2 decimal places

    Answer: 21.17

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