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Cornerstone · Grades 3–5 Keystones #1 29 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 29 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 25

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 3:2:3

    Answer: 81, 54 and 81
  5. 5. Statistics Mean

    Find the mean of: 11, 14, 8, 2

    Answer: 8.75

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