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Cornerstone · Grades 3–5 Keystones #1 16 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 42

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

    Calculate the hypotenuse when a = 10cm and b = 11cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics Mean

    Find the mean of: 20, 9, 2

    Answer: 10.333333333333

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