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Cornerstone · Grades 3–5 Keystones #1 8 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄5

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 24

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

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 232 in the ratio 1:4:3

    Answer: 29, 116 and 87
  5. 5. Statistics Mean

    Calculate the mean of: 33, 45, 16, 5, 43, 14, 13, 6

    Answer: 21.9

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