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Cornerstone · Grades 3–5 Keystones #1 13 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

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

    Solve: 6x + 7 = 49

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 2:4:1

    Answer: 40, 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 5, 19, 15

    Answer: 13

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