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Cornerstone · Grades 3–5 Keystones #1 8 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 87

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics Mean

    Find the mean of: 19, 11, 8, 10, 4

    Answer: 10.4

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