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Cornerstone · Grades 3–5 Keystones #1 18 July 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 18 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 55

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 15cm

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 4:3:3

    Answer: 48, 36 and 36
  5. 5. Statistics Mean

    Find the mean of: 17, 8, 9, 18

    Answer: 13

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