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Cornerstone · Grades 3–5 Keystones #1 24 November 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 24 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 3⁄6

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 51

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:3:1

    Answer: 28, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 14, 9, 19, 9

    Answer: 12.75

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