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Cornerstone · Grades 3–5 Keystones #1 24 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 30

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 9, 26, 6, 43, 15, 14

    Answer: 18.8

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