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Cornerstone · Grades 3–5 Keystones #1 10 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 5⁄7

    Answer: 39⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 19

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

    Calculate the hypotenuse when a = 4cm and b = 4cm

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 1:4:2

    Answer: 13, 52 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 26, 36, 45, 7, 21, 25, 12, 16

    Answer: 23.5

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