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Cornerstone · Grades 3–5 Keystones #1 10 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 4 = 22

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 1:3:1

    Answer: 22, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 5, 4, 10

    Answer: 6.3333333333333

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