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Cornerstone · Grades 3–5 Keystones #1 18 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 18 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 3⁄4

    Answer: 29⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 28

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 1:3:4

    Answer: 22, 66 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 31, 14, 42, 10, 13, 17. Give your answer to 2 decimal places

    Answer: 21.17

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