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Cornerstone · Grades 3–5 Keystones #1 4 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x + 13 = 28

    Answer: x = 5
  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 144 in the ratio 1:2:1

    Answer: 36, 72 and 36
  5. 5. Statistics Mean

    Find the mean of: 7, 11, 5

    Answer: 7.6666666666667

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