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Cornerstone · Grades 3–5 Keystones #1 29 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 6⁄7

    Answer: 43⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 30

    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

    Share 70 in the ratio 3:4

    Answer: 30 and 40
  5. 5. Statistics Mean

    Find the mean of: 15, 12, 3

    Answer: 10

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