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Cornerstone · Grades 3–5 Keystones #1 19 February 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 19 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 5 = 30

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 3:4:2

    Answer: 81, 108 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 17, 43, 32, 39, 50, 7

    Answer: 31.3

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