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

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 1⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 18

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 95 in the ratio 1:1:3

    Answer: 19, 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 23, 5, 19, 44, 36, 17

    Answer: 24

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