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Cornerstone · Grades 3–5 Keystones #1 25 April 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 25 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 6⁄7

    Answer: 45⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 40

    Answer: x = 7
  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 145 in the ratio 1:3:1

    Answer: 29, 87 and 29
  5. 5. Statistics Mean

    Calculate the mean of: 11, 29, 25, 21, 21, 31, 23

    Answer: 23

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