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Cornerstone · Grades 3–5 Keystones #1 22 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 3⁄8

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

    Solve: 5x + 5 = 55

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 2:2:3

    Answer: 20, 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 6, 8, 20

    Answer: 11.333333333333

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