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Cornerstone · Grades 3–5 Keystones #1 27 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 73

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

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:2:3

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

    Find the mean of: 8, 2, 13

    Answer: 7.6666666666667

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