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Cornerstone · Grades 3–5 Keystones #1 20 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 38

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 234 in the ratio 2:3:4

    Answer: 52, 78 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 16, 17, 20, 45, 42, 39, 31, 30

    Answer: 30

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