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Cornerstone · Grades 3–5 Keystones #1 4 July 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 4x - 12 = 32

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 37, 37, 32, 46, 33, 15, 43, 38

    Answer: 35.1

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