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Cornerstone · Grades 3–5 Keystones #1 11 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = 7

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Divide 102 in the ratio 3:2:1

    Answer: 51, 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 18, 5, 16, 6, 15

    Answer: 12

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