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Cornerstone · Grades 3–5 Keystones #1 30 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 30 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 11

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 3:2

    Answer: 57 and 38
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 13

    Answer: 14

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