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Cornerstone · Grades 3–5 Keystones #1 19 September 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 19 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 36

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

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 6, 17, 14

    Answer: 9

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