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Cornerstone · Grades 3–5 Keystones #1 26 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 31

    Answer: x = 13
  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 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 48, 16, 11, 40, 10, 37, 10. Give your answer to 2 decimal places

    Answer: 24.57

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