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Cornerstone · Grades 3–5 Keystones #1 29 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 August 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 + 6 = 36

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

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 4:1:3

    Answer: 68, 17 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 9, 49, 10, 43, 39, 25, 43, 10

    Answer: 28.5

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