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Cornerstone · Grades 3–5 Keystones #1 11 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 6⁄8

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 31

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

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics Mean

    Find the mean of: 8, 25, 13, 14

    Answer: 15

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