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Cornerstone · Grades 3–5 Keystones #1 19 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄7

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 7

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:4

    Answer: 9 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 5, 6, 34, 43, 6, 41

    Answer: 22.5

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