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Cornerstone · Grades 3–5 Keystones #1 26 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄7

    Answer: 38⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 27

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 3:2:3

    Answer: 51, 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 4, 10, 15, 9

    Answer: 9.5

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