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Cornerstone · Grades 3–5 Keystones #1 27 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 39

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

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:2:4

    Answer: 24, 48 and 96
  5. 5. Statistics Mean

    Find the mean of: 7, 4, 3, 15, 5

    Answer: 6.8

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