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Cornerstone · Grades 3–5 Keystones #1 18 December 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

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

    Solve: 3x + 5 = 35

    Answer: x = 10
  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 156 in the ratio 3:2:1

    Answer: 78, 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 18, 8, 15, 12

    Answer: 13.25

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