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Cornerstone · Grades 3–5 Keystones #1 14 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄6

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

    Solve: 7x + 9 = 72

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

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 20, 34, 14, 48, 44, 23, 37, 9

    Answer: 28.6

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