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Cornerstone · Grades 3–5 Keystones #1 27 November 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 27 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 55

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:3:2

    Answer: 16, 48 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 23, 43, 37, 41, 35, 6

    Answer: 30.8

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