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Cornerstone · Grades 3–5 Keystones #1 7 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 78

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

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:4:2

    Answer: 24, 96 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 37, 41, 11, 14, 14, 21

    Answer: 23

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