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Cornerstone · Grades 3–5 Keystones #1 8 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 5

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 8, 43, 36, 29, 17, 43, 45, 9

    Answer: 28.8

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