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Cornerstone · Grades 3–5 Keystones #1 6 April 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 6 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 92

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

    Calculate the hypotenuse when a = 9cm and b = 11cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 2:4:1

    Answer: 26, 52 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 38, 32, 46, 27, 25, 50

    Answer: 36.3

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