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Cornerstone · Grades 3–5 Keystones #1 23 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 23 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 33

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 2:1:1

    Answer: 64, 32 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 27, 37, 13, 38, 38, 22

    Answer: 29.2

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