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Cornerstone · Grades 3–5 Keystones #1 21 January 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 21 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄3

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 19

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 47, 17, 25, 23, 7, 6, 5, 23. Give your answer to 2 decimal places

    Answer: 19.13

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