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Cornerstone · Grades 3–5 Keystones #1 27 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 7⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 25

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 156 in the ratio 1:4:1

    Answer: 26, 104 and 26
  5. 5. Statistics Mean

    Find the mean of: 6, 6, 17, 11

    Answer: 10

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