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Cornerstone · Grades 3–5 Keystones #1 5 February 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 5 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 68

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio Sharing in a ratio

    Divide 132 in the ratio 4:4:3

    Answer: 48, 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 26, 36, 22, 17, 11, 46, 35

    Answer: 27.6

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