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Cornerstone · Grades 3–5 Keystones #1 26 December 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 26 December 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 24

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

    Calculate the hypotenuse when a = 11cm and b = 7cm

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:4:3

    Answer: 30, 60 and 45
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 8, 19

    Answer: 10.75

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