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Cornerstone · Grades 3–5 Keystones #1 29 May 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 13

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 48, 32, 37, 10, 37, 45, 46. Give your answer to 2 decimal places

    Answer: 36.43

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