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Cornerstone · Grades 3–5 Keystones #1 18 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 33

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:2:3

    Answer: 88, 44 and 66
  5. 5. Statistics Mean

    Calculate the mean of: 28, 24, 24, 46, 15, 39

    Answer: 29.3

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