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Cornerstone · Grades 3–5 Keystones #1 16 March 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 4⁄5

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 5, 37, 11, 23, 45, 34. Give your answer to 2 decimal places

    Answer: 25.83

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