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Cornerstone · Grades 3–5 Keystones #1 4 February 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 4 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 32

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 1:4:2

    Answer: 17, 68 and 34
  5. 5. Statistics Mean

    Find the mean of: 6, 20, 12, 16

    Answer: 13.5

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