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Cornerstone · Grades 3–5 Keystones #1 19 June 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 19 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 2⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 88

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 13cm

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:1:2

    Answer: 60, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 15, 4, 5

    Answer: 8

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