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Cornerstone · Grades 3–5 Keystones #1 21 June 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄4

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

    Solve: 5x - 14 = 31

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics Mean

    Find the mean of: 7, 20, 6, 15

    Answer: 12

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