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Cornerstone · Grades 3–5 Keystones #1 24 March 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 24 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 95

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 19, 22, 37, 17, 28, 21, 19

    Answer: 23.3

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