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Cornerstone · Grades 3–5 Keystones #1 22 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

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

    Solve: 4x - 15 = 37

    Answer: x = 13
  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 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 12, 20, 14, 43, 46, 35, 9. Give your answer to 2 decimal places

    Answer: 25.57

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