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Cornerstone · Grades 3–5 Keystones #1 15 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 30

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 3:2:3

    Answer: 51, 34 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 12, 11, 47, 7, 6, 13, 35, 39

    Answer: 21.3

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